Triiodothyroxine T3 Antibody

Triiodothyroxine (T3 or triiodothyronine) is a thyroid hormone regulated by the thyroid-stimulating hormone (TSH). T4 thyroxine is converted into T3 thyroxine in the thyroid. The thyroid gland releases greater amounts of T4 than T3 but T3 is formed peripherally by T4 deiodination. T4 and T3 levels are markers of hyperthyroidism.