{"id":4147,"date":"2022-01-13T00:28:30","date_gmt":"2022-01-13T00:28:30","guid":{"rendered":"https:\/\/44.199.17.173\/?p=4147"},"modified":"2024-06-20T09:02:38","modified_gmt":"2024-06-20T17:02:38","slug":"thyroid-function-tests","status":"publish","type":"post","link":"https:\/\/www.thyforlife.com\/thyroid-function-tests\/","title":{"rendered":"Thyroid Function Tests: Types, Purpose, and Useful Considerations"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"4147\" class=\"elementor elementor-4147\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d5af72d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d5af72d\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;63ef4ab&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-293653d\" data-id=\"293653d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-26d588d elementor-widget elementor-widget-image\" data-id=\"26d588d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"628\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/What-Is-A-Full-Thyroid-Test.jpg\" class=\"attachment-full size-full wp-image-7755 lazyload\" alt=\"Phlebotomy procedure during coronavirus crisis. medical worker preparing to take blood for analysis\" data-srcset=\"https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/What-Is-A-Full-Thyroid-Test.jpg 1200w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/What-Is-A-Full-Thyroid-Test-300x157.jpg 300w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/What-Is-A-Full-Thyroid-Test-1024x536.jpg 1024w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/What-Is-A-Full-Thyroid-Test-768x402.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><noscript><img decoding=\"async\" width=\"1200\" height=\"628\" src=\"https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/What-Is-A-Full-Thyroid-Test.jpg\" class=\"attachment-full size-full wp-image-7755 lazyload\" alt=\"Phlebotomy procedure during coronavirus crisis. medical worker preparing to take blood for analysis\" srcset=\"https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/What-Is-A-Full-Thyroid-Test.jpg 1200w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/What-Is-A-Full-Thyroid-Test-300x157.jpg 300w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/What-Is-A-Full-Thyroid-Test-1024x536.jpg 1024w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/What-Is-A-Full-Thyroid-Test-768x402.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/noscript>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f16e2e8 elementor-position-left elementor-vertical-align-top elementor-widget elementor-widget-image-box\" data-id=\"f16e2e8\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img decoding=\"async\" width=\"150\" height=\"150\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.thyforlife.com\/wp-content\/uploads\/2021\/12\/Natalie-Bessom-DO_800-e1641834051510-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-image-3531 lazyload\" alt=\"Dr. Natalie Bessom\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.thyforlife.com\/wp-content\/uploads\/2021\/12\/Natalie-Bessom-DO_800-e1641834051510-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail wp-image-3531 lazyload\" alt=\"Dr. Natalie Bessom\" \/><\/noscript><\/figure><div class=\"elementor-image-box-content\"><h6 class=\"elementor-image-box-title\">Medically reviewed by<\/h6><p class=\"elementor-image-box-description\"><b>Natalie Bessom,<\/b> D.O. Board-certified family medicine doctor with specialty training in nutrition, USA<\/p><\/div><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c1ba21b elementor-widget elementor-widget-text-editor\" data-id=\"c1ba21b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The thyroid gland, a butterfly-shaped organ at the base of your neck, plays a vital role in regulating your body&#8217;s metabolism, energy levels, mood, and even heart rate. When it&#8217;s not functioning properly, it can cause a cascade of symptoms that can significantly impact your quality of life.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This is where thyroid tests come in. <\/span><b>Thyroid function tests (TFTs)<\/b><span style=\"font-weight: 400;\"> are a series of blood tests used to measure how well the thyroid gland is working. These tests are necessary for detecting both thyroid problems such as hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid), <\/span><span style=\"font-weight: 400;\">as well as other thyroid-related conditions such as thyroid cancer or nodules<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In this article, we will answer the following questions:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"#thyroid-function-tests-purpose\"><span style=\"font-weight: 400;\">What are thyroid function tests looking for?<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"#thyroid-function-tests-types\"><span style=\"font-weight: 400;\">What are the types of thyroid tests and how are they relevant?<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"#reference-ranges\"><span style=\"font-weight: 400;\">What are reference ranges?<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"#when-thyroid-panel-is-needed\" target=\"_blank\" rel=\"noopener\">When is a thyroid panel necessary?<\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><a href=\"#during-thyroid-testing\">What should you expect during a thyroid test?<\/a><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"#after-thyroid-testing\" target=\"_blank\" rel=\"noopener\">What should you do after your test?<\/a><\/li>\n<\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-dc9111c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"dc9111c\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ca1a724\" data-id=\"ca1a724\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ccaae09 elementor-widget elementor-widget-spacer\" data-id=\"ccaae09\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-044e179 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"044e179\" data-element_type=\"section\" id=\"test\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;deede11&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5996daa\" data-id=\"5996daa\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d3a6230 elementor-widget elementor-widget-heading\" data-id=\"d3a6230\" data-element_type=\"widget\" id=\"thyroid-function-tests-purpose\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What are thyroid function tests looking for?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5971340 elementor-widget elementor-widget-text-editor\" data-id=\"5971340\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">TFTs are used to assess the biochemical function of the thyroid gland. This means that they measure blood levels of different hormones and proteins related to your thyroid function.<\/span><\/p><p><span style=\"font-weight: 400;\">Of course, we cannot talk about thyroid function tests without mentioning the two main players involved in thyroid function. These are:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Thyroid Hormones<\/b><span style=\"font-weight: 400;\">: Triiodothyronine (T3) and thyroxine (T4) are hormones produced by your thyroid gland. They travel through your bloodstream and influence various bodily functions.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Thyroid-Stimulating Hormone (TSH)<\/b><span style=\"font-weight: 400;\">: Produced by the pituitary gland at the base of your brain, TSH acts like an instructor, telling your thyroid how much T3 and T4 to produce.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">One main defining feature of TFTs is that they are purely blood tests focused on hormone levels and function, distinguishing them from other tests like thyroid imaging tests which are used to visualize the thyroid&#8217;s size, shape, and position, detect nodules, or assess the gland&#8217;s ability to take up iodine.<\/span><\/p><p><span style=\"font-weight: 400;\">In the next section, we will go into detail about what a full thyroid panel entails.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d889808 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d889808\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8984bfd\" data-id=\"8984bfd\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8dcc471 elementor-widget elementor-widget-spacer\" data-id=\"8dcc471\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8c38d02 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8c38d02\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;deede11&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-38b944e\" data-id=\"38b944e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-636279a elementor-widget elementor-widget-heading\" data-id=\"636279a\" data-element_type=\"widget\" id=\"thyroid-function-tests-types\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What are the types of thyroid tests and how are they relevant?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-db7d150 elementor-widget elementor-widget-text-editor\" data-id=\"db7d150\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h6><b>TSH Test\u00a0<\/b><\/h6><p><span style=\"font-weight: 400;\">This is often the first test done because it\u2019s the most sensitive indicator of thyroid function. Usually, high TSH level indicates hypothyroidism (when FT4 is low), while a low TSH level suggests hyperthyroidism (when FT4 is high). Normal TSH with abnormal T4 or T3, however, may suggest <\/span><a href=\"https:\/\/www.thyforlife.com\/subclinical-thyroid-disease\/\"><span style=\"font-weight: 400;\">subclinical thyroid disease<\/span><\/a><span style=\"font-weight: 400;\"> or a problem with the pituitary gland.<\/span><\/p><p><span style=\"font-weight: 400;\">\u00a0<\/span><\/p><h6><b>Free T4 (FT4) Test<\/b><\/h6><p><span style=\"font-weight: 400;\">This measures the amount of circulating T4 hormone not bound to proteins, thus available to the body\u2019s tissues.\u00a0 It\u2019s a more precise measure of thyroid function compared to total T4 levels.\u00a0<\/span><span style=\"color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; font-size: 1rem;\">FT4 levels can be abnormal even with a normal TSH in some cases.\u00a0<\/span><span style=\"color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; font-size: 1rem;\">Usually, a\u00a0 high FT4 level usually accompanies hyperthyroidism, and a low FT4 level can be a sign of hypothyroidism.<\/span><\/p><p><span style=\"color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; font-size: 1rem;\">\u00a0<\/span><\/p><h6><b>Free T3 (FT3) Test<\/b><\/h6><p><span style=\"font-weight: 400;\">This measures the level of T3 that is free and available for the body\u2019s use. It\u2019s not always included in the initial testing but might be helpful in specific situations. For instance,\u00a0 FT3 testing might be added if the initial results are ambiguous or if a condition like hyperthyroidism is suspected, where <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC7208085\/#:~:text=Hyperthyroid%20patients%20with%20graves%20disease%20sometimes%20have%20a%20disproportionate%20increase%20in%20serum%20T3%20levels%20when%20compared%20to%20serum%20T4.\"><span style=\"font-weight: 400;\">T3 levels can be disproportionately elevated<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">\u00a0<\/span><\/p><h6><b>Total T4\u00a0 (TT4) and Total T3 (TT3) Tests<\/b><\/h6><p><span style=\"font-weight: 400;\">These tests measure the total levels of T4 and T3 in the blood, including both the free and the protein-bound hormone.\u00a0<\/span><span style=\"color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; font-size: 1rem;\">These tests are less commonly performed and are usually ordered to provide a more comprehensive view of thyroid hormone function, especially in situations where binding protein abnormalities are suspected.<\/span><\/p><p><span style=\"color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; font-size: 1rem;\">\u00a0<\/span><\/p><h6><b>Thyroid Antibody Tests<\/b><\/h6><p><span style=\"font-weight: 400;\">These tests detect the presence of antibodies that attack the thyroid gland. They are particularly useful for diagnosing autoimmune thyroid diseases like Hashimoto\u2019s thyroiditis or Graves\u2019 disease. They aren\u2019t routinely included in initial screenings unless symptoms suggest an autoimmune condition. Here are the antibodies of interest:<\/span><\/p><ol><li><b>Thyroid Peroxidase Antibodies (TPOAb):<\/b><span style=\"font-weight: 400;\"> These antibodies target an enzyme in the thyroid gland involved in hormone production. High levels are commonly associated with Hashimoto&#8217;s thyroiditis.<\/span><\/li><li><b>Thyroglobulin Antibodies (TgAb):<\/b><span style=\"font-weight: 400;\"> These target thyroglobulin, a protein involved in thyroid hormone production. Elevated levels can suggest Hashimoto\u2019s thyroiditis and are also monitored in thyroid cancer management. Thyroglobulin antibodies\u00a0 can interfere with thyroglobulin (Tg) measurements used as a <\/span><a href=\"https:\/\/jamanetwork.com\/journals\/jama\/fullarticle\/2728926\"><span style=\"font-weight: 400;\">tumor marker for thyroid cancer recurrence<\/span><\/a><span style=\"font-weight: 400;\">, requiring careful monitoring and interpretation in patients post-treatment.<\/span><\/li><li><b>Thyroid Stimulating Hormone Receptor Antibodies (TSHRAb or TRAb):<\/b><span style=\"font-weight: 400;\"> These include stimulating and blocking antibodies. Stimulating antibodies can lead to Graves\u2019 disease by mimicking TSH and causing excess thyroid hormone production, while blocking antibodies can inhibit thyroid function.<\/span><\/li><\/ol><div>\u00a0<\/div><h6><b>Reverse T3 (rT3) Test<\/b><\/h6><p><span style=\"font-weight: 400;\">This test measures a form of T4 that is inactive. It\u2019s not<\/span><span style=\"font-weight: 400;\">\u00a0typically part of standard thyroid function panels but can be important in the evaluation of thyroid function in certain conditions, such as severe illness or starvation, where the body converts T4 to rT3 instead of the active T3. It helps assess how the body is managing and converting thyroid hormones, especially in complex cases with <\/span>non-thyroidal illness syndrome (NTIS).<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-bc40fa0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"bc40fa0\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5f9ab26\" data-id=\"5f9ab26\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3a933f3 elementor-widget elementor-widget-spacer\" data-id=\"3a933f3\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9113534 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9113534\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;deede11&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ea673a7\" data-id=\"ea673a7\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a25131b elementor-widget elementor-widget-heading\" data-id=\"a25131b\" data-element_type=\"widget\" id=\"reference-ranges\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What are reference ranges? <\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d8a687 elementor-widget elementor-widget-text-editor\" data-id=\"5d8a687\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Reference ranges are absolutely important in interpreting thyroid function test results as they provide the benchmarks that help determine whether thyroid hormone levels are <\/span><b>normal<\/b><span style=\"font-weight: 400;\">, <\/span><b>high<\/b><span style=\"font-weight: 400;\">, or <\/span><b>low<\/b><span style=\"font-weight: 400;\">. These ranges, however, are not one-size-fits-all; they can vary based on the testing methods used by different laboratories, patient age, sex, and other physiological factors such as pregnancy.<\/span><\/p><p><span style=\"font-weight: 400;\">Here are some <\/span><b>key facts about reference ranges<\/b><span style=\"font-weight: 400;\">:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Different labs may use different test methods or equipment, which can influence the reference ranges.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reference ranges are often established based on a healthy population that is assumed to be representative of the general public. However, what is normal in one demographic or ethnic group may not be for another.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Factors like age and sex can affect hormone levels. For example, older adults typically have higher TSH levels than younger people.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Understanding these nuances is crucial because relying solely on standard reference ranges without considering individual and methodological variations can lead to misinterpretation of thyroid function. This is why healthcare providers often look at trends in individual test results over time and correlate them with symptoms and other test findings rather than making decisions based solely on single test results.<\/span><\/p><p><span style=\"font-weight: 400;\">Physicians may also adjust the \u201cnormal\u201d range for individuals based on clinical judgment and the specific health context. For instance, a slightly elevated TSH may be acceptable in an elderly person without symptoms, but the same result might prompt treatment in a younger person with symptoms of hypothyroidism.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0ebb6da elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0ebb6da\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e936e31\" data-id=\"e936e31\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c8b40b8 elementor-widget elementor-widget-spacer\" data-id=\"c8b40b8\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e6ce187 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e6ce187\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;deede11&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d1ecb5a\" data-id=\"d1ecb5a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-af32093 elementor-widget elementor-widget-heading\" data-id=\"af32093\" data-element_type=\"widget\" id=\"when-thyroid-panel-is-needed\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">When is a thyroid panel necessary? <\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bb29558 elementor-widget elementor-widget-text-editor\" data-id=\"bb29558\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Your doctor might recommend thyroid testing if you exhibit symptoms of thyroid dysfunction, have a family history of thyroid disease, or have a medical condition that affects the thyroid.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Here\u2019s a summary of <\/span><a href=\"https:\/\/www.aafp.org\/pubs\/afp\/issues\/2004\/0515\/p2415.html\"><span style=\"font-weight: 400;\">some recommendations<\/span><\/a><span style=\"font-weight: 400;\"> for thyroid function screening from various medical organizations:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Age 35 and above:<\/b><span style=\"font-weight: 400;\"> The <\/span><a href=\"https:\/\/jamanetwork.com\/journals\/jamainternalmedicine\/article-abstract\/485355\"><span style=\"font-weight: 400;\">American Thyroid Association<\/span><\/a><span style=\"font-weight: 400;\"> suggests starting regular checks at this age, with more frequent screenings for high-risk individuals.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Perimenopausal and menopausal women:<\/b><span style=\"font-weight: 400;\"> The <\/span><a href=\"https:\/\/publications.gc.ca\/site\/eng\/9.699650\/publication.html\"><span style=\"font-weight: 400;\">Canadian Task Force on the Periodic Health Examination<\/span><\/a><span style=\"font-weight: 400;\"> recommends doctors\u00a0 to be on the lookout for possible thyroid problems in women going through perimenopause and menopause, even if symptoms are general.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Women over 50 with symptoms:<\/b><span style=\"font-weight: 400;\"> The <\/span><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/9669976\/\"><span style=\"font-weight: 400;\">American College of Physicians<\/span><\/a><span style=\"font-weight: 400;\"> recommends checking women in this age group who experience general symptoms that could be related to thyroid function.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Women considering pregnancy:<\/b><span style=\"font-weight: 400;\"> The <\/span><a href=\"https:\/\/www.endocrinepractice.org\/article\/S1530-891X(20)40235-6\/abstract\"><span style=\"font-weight: 400;\">American Association of Clinical Endocrinologists<\/span><\/a><span style=\"font-weight: 400;\"> recommends measuring TSH levels in women planning pregnancy, either before conceiving or during the first trimester.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Also, if\u00a0 you have already been diagnosed with a thyroid disorder and are on medication, regular thyroid testing helps ensure that the medication is working effectively.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6fa1579 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6fa1579\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-95e5aef\" data-id=\"95e5aef\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7aec9d8 elementor-widget elementor-widget-spacer\" data-id=\"7aec9d8\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-70bf006 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"70bf006\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;deede11&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-47c368f\" data-id=\"47c368f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ad83f73 elementor-widget elementor-widget-heading\" data-id=\"ad83f73\" data-element_type=\"widget\" id=\"during-thyroid-testing\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What to expect during a thyroid test<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-20f18d9 elementor-widget elementor-widget-text-editor\" data-id=\"20f18d9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A thyroid test is a simple procedure. A healthcare professional will draw a small amount of blood from your arm. There\u2019s usually no special preparation required, although your doctor might advise you to temporarily limit iodine-rich foods and avoid medications containing iodine for about a week beforehand in order to ensure accurate test results. After your blood is drawn, it is then sent to a laboratory for analysis and results.<\/span><\/p><p><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0b839aa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0b839aa\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b45481e\" data-id=\"b45481e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fdeb2ac elementor-widget elementor-widget-image\" data-id=\"fdeb2ac\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1080\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests.jpg\" class=\"attachment-full size-full wp-image-4149 lazyload\" alt=\"The doctor&#039;s hand in the laboratory holds a test tube with blood\" data-srcset=\"https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests.jpg 1920w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests-300x169.jpg 300w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests-1024x576.jpg 1024w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests-768x432.jpg 768w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests-1536x864.jpg 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests.jpg\" class=\"attachment-full size-full wp-image-4149 lazyload\" alt=\"The doctor&#039;s hand in the laboratory holds a test tube with blood\" srcset=\"https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests.jpg 1920w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests-300x169.jpg 300w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests-1024x576.jpg 1024w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests-768x432.jpg 768w, https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/blood-tests-1536x864.jpg 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/noscript>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e55626a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e55626a\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f4685ef\" data-id=\"f4685ef\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f712949 elementor-widget elementor-widget-spacer\" data-id=\"f712949\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d40e389 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d40e389\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;deede11&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-31ca637\" data-id=\"31ca637\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-352255a elementor-widget elementor-widget-heading\" data-id=\"352255a\" data-element_type=\"widget\" id=\"after-thyroid-testing\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What to do after your test<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-be57c37 elementor-widget elementor-widget-text-editor\" data-id=\"be57c37\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Your doctor will discuss your results with you. They will consider your symptoms, medical history, and the complete picture of your test results to make a diagnosis and recommend the next steps. This might involve additional tests, medication, or lifestyle changes. Do not hesitate to voice out any concerns you might have. <\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5754b80 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5754b80\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9d8d77d\" data-id=\"9d8d77d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-914bcc1 elementor-widget elementor-widget-spacer\" data-id=\"914bcc1\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3bec3a9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3bec3a9\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;fa58c93&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5c9ed53\" data-id=\"5c9ed53\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-174d3e0 elementor-widget elementor-widget-heading\" data-id=\"174d3e0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Key Takeaways<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-19d7dc9 elementor-widget elementor-widget-text-editor\" data-id=\"19d7dc9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul><li><span style=\"font-weight: 400;\">TFTs, also collectively referred to as a thyroid panel, are blood tests used to assess your thyroid function and diagnose any underlying conditions.<\/span><\/li><li><span style=\"font-weight: 400;\">While also useful in thyroid evaluation, thyroid imaging tests (which include procedures like ultrasound, radioactive iodine uptake tests, and thyroid scans) are not considered part of the thyroid function tests.<\/span><\/li><li><span style=\"font-weight: 400;\">A full\u00a0 thyroid panel typically includes various tests, including:<\/span><ul><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">TSH test<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Free T4 test<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Free T3 test<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Total T3 test<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Total T4 test<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">TPOAb test<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">TgAbtest<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">TSHRAb test<\/span><\/li><\/ul><\/li><li style=\"font-weight: 400;\" aria-level=\"1\">While not part of a standard thyroid panel, the rT3 test is especially useful in the diagnosis of non-thyroidal illness syndrome.<\/li><li><span style=\"font-weight: 400;\">Reference ranges for thyroid tests can vary by lab and individual factors, which is why doctors consider these differences when reading your results.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-da6bd8e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"da6bd8e\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c19168c\" data-id=\"c19168c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f64d680 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"f64d680\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1381ab5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1381ab5\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0fb4b1d\" data-id=\"0fb4b1d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3673a61 elementor-widget elementor-widget-text-editor\" data-id=\"3673a61\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>If you want to better manage your blood tests, medications, symptoms, moods, energy levels, and weight changes, download our\u00a0<a style=\"background-color: #ffffff;\" href=\"https:\/\/thyforlife.com\/download-app\/\">ThyForLife app<\/a>\u00a0to get a head start! ThyForLife is an all-in-one thyroid solution right at your fingertips.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4757821 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4757821\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-933eb61\" data-id=\"933eb61\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6770c33 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"6770c33\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c836a35 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c836a35\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7f4e8f0\" data-id=\"7f4e8f0\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6d13016 elementor-widget elementor-widget-spacer\" data-id=\"6d13016\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Medically reviewed by Natalie Bessom, D.O. Board-certified family medicine doctor with specialty training in nutrition, USA The thyroid gland, a butterfly-shaped organ at the base of your neck, plays a vital role in regulating your body&#8217;s metabolism, energy levels, mood, and even heart rate. When it&#8217;s not functioning properly, it can cause a cascade of [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":7755,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,13,25,11],"tags":[],"class_list":["post-4147","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-tos","category-lifestyle","category-medication","category-thyroid-symptoms"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Thyroid Function Tests: Types, Purpose, and Useful Considerations<\/title>\n<meta name=\"description\" content=\"Learn what thyroid function tests are, the importance of each test, and what to expect during and after a thyroid test.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thyforlife.com\/thyroid-function-tests\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is a Full Thyroid Test?\" \/>\n<meta property=\"og:description\" content=\"Learn what a full thyroid test looks like, the importance of each test, what to expect during a full thyroid test, and aftercare.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thyforlife.com\/thyroid-function-tests\/\" \/>\n<meta property=\"og:site_name\" content=\"ThyForLife\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-13T00:28:30+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-20T17:02:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.thyforlife.com\/wp-content\/uploads\/2022\/01\/What-Is-A-Full-Thyroid-Test.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta 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