{"id":2249,"date":"2024-12-06T06:03:18","date_gmt":"2024-12-06T06:03:18","guid":{"rendered":"https:\/\/suburban-blog.abymtech.com\/?p=2249"},"modified":"2025-03-05T10:24:22","modified_gmt":"2025-03-05T10:24:22","slug":"interpretation-of-tft","status":"publish","type":"post","link":"https:\/\/www.suburbandiagnostics.com\/blog\/interpretation-of-tft\/","title":{"rendered":"Interpretation of Thyroid Function Test"},"content":{"rendered":"<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-2273\" src=\"https:\/\/suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-300x180.webp\" alt=\"\" width=\"1022\" height=\"613\" title=\"\" srcset=\"https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-300x180.webp 300w, https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-768x461.webp 768w, https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test.webp 1000w\" sizes=\"(max-width: 1022px) 100vw, 1022px\" \/><\/p>\n<table style=\"font-weight: 400;\">\n<tbody>\n<tr>\n<td>FT3\/FT4\u2191<\/p>\n<p>TSH\u2193*<\/td>\n<td>\n<ul>\n<li>Graves\u2019 disease<\/li>\n<li>Toxic multinodular goiter<\/li>\n<li>Toxic adenoma<\/li>\n<li>Thyroiditis (post-viral, post-partum)<\/li>\n<li>Iodine deficiency or excess<\/li>\n<li>Excess Iodine intake<\/li>\n<li>Excess thyroxine ingestion<\/li>\n<li>Pregnancy-related (hyperemesis gravidarum; hydatidiform mole)<\/li>\n<li>Congenital hyperthyroidism<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td>FT3\/FT4\u2193<\/p>\n<p>TSH\u2194 \/\u2193*<\/td>\n<td>\n<ul>\n<li>Non-thyroidal illness<\/li>\n<li>Central hypothyroidism<\/li>\n<li>Isolated TSH deficiency<\/li>\n<li>Assay interference<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td>FT3\/FT4\u2191<\/p>\n<p>TSH\u2194 \/\u2191<\/td>\n<td>\n<ul>\n<li>Assay interference<\/li>\n<li>Thyroxine replacement therapy<\/li>\n<li>Drugs (eg: amiodarone, heparin)<\/li>\n<li>Non-thyroidal illness<\/li>\n<li>Neonatal period<\/li>\n<li>TSH &#8211; secreting pituitary adenoma<\/li>\n<li>Resistance to thyroid hormone, transportation or metabolism<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td>FT3\/FT4\u2193<\/p>\n<p>TSH\u2194 \/\u2191<\/td>\n<td>\n<ul>\n<li>Autoimmune thyroiditis<\/li>\n<li>(Hashimoto\u2019s; atrophic)<\/li>\n<li>Post-radioiodine therapy\/ thyroidectomy<\/li>\n<li>Hypothyroid phase of thyroiditis<\/li>\n<li>Drugs (amiodarone, lithium, TKIs, ATDs)<\/li>\n<li>Iodine deficiency or excess<\/li>\n<li>Neck infection<\/li>\n<li>Reidel\u2019s thyroiditis<\/li>\n<li>Thyroid infiltration (tumour, amyloid)<\/li>\n<li>Congenital hypothyroidism<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td>FT3\/FT4\u2194<\/p>\n<p>TSH\u2191<\/td>\n<td>\n<ul>\n<li>Subclinical hyperthyroidism<\/li>\n<li>Poor compliance with thyroxine<\/li>\n<li>Malabsorption of thyroxine<\/li>\n<li>Drugs (amiodarone)<\/li>\n<li>Assay interference<\/li>\n<li>Non-thyroidal illness recovery<\/li>\n<li>TSH resistance<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td>FT3\/FT4\u2194<\/p>\n<p>TSH\u2193*<\/td>\n<td>\n<ul>\n<li>Subclinical hyperthyroidism<\/li>\n<li>Recent treatment for hyperthyroidism<\/li>\n<li>Drugs (eg: steroids, dopamine)<\/li>\n<li>Assay interference<\/li>\n<li>Non-thyroidal illness<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-weight: 400;\"><b>FT3<\/b>&#8211; Free Triiodothyronine; <b>FT4 <\/b>&#8211; Free Thyroxine; <b>TSH <\/b>&#8211; Thyroid Stimulating Hormone<\/p>\n<p style=\"font-weight: 400;\"><b>Reference<\/b>:<\/p>\n<p style=\"font-weight: 400;\">Koulouri O, Moran C, Halsall D, Chatterjee K, Gumell M. Pitfalls in the measurement and interpretation of thyroid function tests. Best Pract Res Clin Endocrinol Metab. 2013 Dec; 27(6):745-62.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>FT3\/FT4\u2191 TSH\u2193* Graves\u2019 disease Toxic multinodular goiter Toxic adenoma Thyroiditis (post-viral, post-partum) Iodine deficiency or excess Excess Iodine intake Excess thyroxine ingestion Pregnancy-related (hyperemesis gravidarum; hydatidiform mole) Congenital hyperthyroidism FT3\/FT4\u2193 TSH\u2194 \/\u2193* Non-thyroidal illness Central hypothyroidism Isolated TSH deficiency Assay interference FT3\/FT4\u2191 TSH\u2194 \/\u2191 Assay interference Thyroxine replacement therapy Drugs (eg: amiodarone, heparin) Non-thyroidal illness<span class=\"post-excerpt-end\">&hellip;<\/span><\/p>\n<p class=\"more-link\"><a href=\"https:\/\/www.suburbandiagnostics.com\/blog\/interpretation-of-tft\/\" class=\"themebutton\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":2273,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-2249","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-for-doctors"],"blog_post_layout_featured_media_urls":{"thumbnail":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-150x150.webp",150,150,true],"full":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test.webp",1000,600,false]},"categories_names":{"5":{"name":"For Doctors","link":"https:\/\/www.suburbandiagnostics.com\/blog\/for-doctors\/"}},"tags_names":[],"comments_number":"0","rttpg_featured_image_url":{"full":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test.webp",1000,600,false],"landscape":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test.webp",1000,600,false],"portraits":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test.webp",1000,600,false],"thumbnail":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-150x150.webp",150,150,true],"medium":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-300x180.webp",300,180,true],"large":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test.webp",1000,600,false],"1536x1536":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test.webp",1000,600,false],"2048x2048":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test.webp",1000,600,false],"shuttle-column1-1\/3":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-1000x380.webp",1000,380,true],"shuttle-column1-1\/4":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-1000x285.webp",1000,285,true],"shuttle-column2-1\/2":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-570x285.webp",570,285,true],"shuttle-column2-2\/3":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-570x380.webp",570,380,true],"shuttle-column3-1\/3":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-380x107.webp",380,107,true],"shuttle-column3-2\/3":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-380x254.webp",380,254,true],"shuttle-column4-2\/3":["https:\/\/www.suburbandiagnostics.com\/blog\/wp-content\/uploads\/2024\/12\/Interpretation-of-Thyroid-Function-Test-285x190.webp",285,190,true]},"rttpg_author":{"display_name":"Suburban","author_link":"https:\/\/www.suburbandiagnostics.com\/blog\/author\/suburban\/"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/www.suburbandiagnostics.com\/blog\/for-doctors\/\" rel=\"category tag\">For Doctors<\/a>","rttpg_excerpt":"FT3\/FT4\u2191 TSH\u2193* Graves\u2019 disease Toxic multinodular goiter Toxic adenoma Thyroiditis (post-viral, post-partum) Iodine deficiency or excess Excess Iodine intake Excess thyroxine ingestion Pregnancy-related (hyperemesis gravidarum; hydatidiform mole) Congenital hyperthyroidism FT3\/FT4\u2193 TSH\u2194 \/\u2193* Non-thyroidal illness Central hypothyroidism Isolated TSH deficiency Assay interference FT3\/FT4\u2191 TSH\u2194 \/\u2191 Assay interference Thyroxine replacement therapy Drugs (eg: amiodarone, heparin) Non-thyroidal illness&hellip;Read&hellip;","_links":{"self":[{"href":"https:\/\/www.suburbandiagnostics.com\/blog\/wp-json\/wp\/v2\/posts\/2249","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.suburbandiagnostics.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.suburbandiagnostics.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.suburbandiagnostics.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.suburbandiagnostics.com\/blog\/wp-json\/wp\/v2\/comments?post=2249"}],"version-history":[{"count":5,"href":"https:\/\/www.suburbandiagnostics.com\/blog\/wp-json\/wp\/v2\/posts\/2249\/revisions"}],"predecessor-version":[{"id":4342,"href":"https:\/\/www.suburbandiagnostics.com\/blog\/wp-json\/wp\/v2\/posts\/2249\/revisions\/4342"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.suburbandiagnostics.com\/blog\/wp-json\/wp\/v2\/media\/2273"}],"wp:attachment":[{"href":"https:\/\/www.suburbandiagnostics.com\/blog\/wp-json\/wp\/v2\/media?parent=2249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.suburbandiagnostics.com\/blog\/wp-json\/wp\/v2\/categories?post=2249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.suburbandiagnostics.com\/blog\/wp-json\/wp\/v2\/tags?post=2249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}