{"id":32878,"date":"2023-04-02T12:01:37","date_gmt":"2023-04-02T09:01:37","guid":{"rendered":"https:\/\/labcare.gr\/?p=32878"},"modified":"2023-04-18T23:52:48","modified_gmt":"2023-04-18T20:52:48","slug":"total-triiodothyronine-t3","status":"publish","type":"post","link":"http:\/\/labcare.gr\/en\/total-triiodothyronine-t3\/","title":{"rendered":"Total Triiodothyronine T3"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text]<strong>About the test<\/strong><\/p>\n<p>T3 is a thyroid hormone, 20% of which, is produced by the thyroid gland and 80% in peripheral tissues by conversion of T4 to T3 (deiodination).<\/p>\n<p>It circulates in blood either bound to proteins (total T3) or free of proteins (free T3).<\/p>\n<p>T3 measurement is used for the diagnosis of hyperthyroidism and T3 thyrotoxicosis.<\/p>\n<p><strong>Sample<\/strong><\/p>\n<p>Venous blood<\/p>\n<p><strong>Preparation<\/strong><\/p>\n<p>None required.<\/p>\n<p>In case the examinee is under thyroid medication he\/she should postpone intake of medication until after the test.<\/p>\n<p><strong>Procedure<\/strong><\/p>\n<p>Venipuncture<\/p>\n<p><strong>Increased values<\/strong><\/p>\n<ul>\n<li>Hyperthyroidism<\/li>\n<li>Graves\u2019 disease<\/li>\n<li>T3 thyrotoxicosis<\/li>\n<li>Pregnancy<\/li>\n<li>Drugs (Estrogens, lithium, oral contraceptives, rifampicin, clofibrate)<\/li>\n<\/ul>\n<p><strong>Decreased values<\/strong><\/p>\n<ul>\n<li>Thyroidectomy<\/li>\n<li>Anorexia nervosa<\/li>\n<li>Preeclampsia<\/li>\n<li>Liver cirrhosis<\/li>\n<\/ul>\n<p><strong>Additional information<\/strong><\/p>\n<ul>\n<li>Low \u03a43 levels may be indicative of hypothyroidism, however, they are not diagnostic since T3 is usually the last hormone affected in hypothyroid patients.<\/li>\n<li>Free T3 is measured with other hormones in case of hyperthyroidism.<\/li>\n<li>Free T3 plays a crucial role in central nervous system of infants.<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>T3 is a thyroid hormone, 20% of which, is produced by the thyroid gland and 80% in peripheral tissues by conversion of T4 to T3 (deiodination).<br \/>\nIt circulates in blood either bound to proteins (total T3) or free of proteins (free T3).<\/p>\n","protected":false},"author":1,"featured_media":33218,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55],"tags":[],"class_list":["post-32878","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-list-of-exams"],"_links":{"self":[{"href":"http:\/\/labcare.gr\/en\/wp-json\/wp\/v2\/posts\/32878","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/labcare.gr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/labcare.gr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/labcare.gr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/labcare.gr\/en\/wp-json\/wp\/v2\/comments?post=32878"}],"version-history":[{"count":2,"href":"http:\/\/labcare.gr\/en\/wp-json\/wp\/v2\/posts\/32878\/revisions"}],"predecessor-version":[{"id":33506,"href":"http:\/\/labcare.gr\/en\/wp-json\/wp\/v2\/posts\/32878\/revisions\/33506"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/labcare.gr\/en\/wp-json\/wp\/v2\/media\/33218"}],"wp:attachment":[{"href":"http:\/\/labcare.gr\/en\/wp-json\/wp\/v2\/media?parent=32878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/labcare.gr\/en\/wp-json\/wp\/v2\/categories?post=32878"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/labcare.gr\/en\/wp-json\/wp\/v2\/tags?post=32878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}