Triiodothyronine, also known as T3, is one of the two main hormones your thyroid gland releases into your bloodstream. Your thyroid also produces thyroxine, also known as T4 and tetraiodothyronine. T4 and T3 work together and are commonly referred to as “thyroid hormone.”

2020年7月22日 · Triiodothyronine, or T3, is an important thyroid hormone that helps maintain muscle control, brain function and development, heart and digestive functions. High or low T3 levels may...

What is a triiodothyronine (T3) test? A triiodothyronine (T3) test measures the level of T3 in a sample of your blood. It's used to help diagnose thyroid disease. Your thyroid is a small, butterfly-shaped gland at the base of your throat. It makes two hormones, T3 and T4 (thyroxine).

2024年11月4日 · T3 is an active thyroid hormone that your body creates by converting thyroxine (T4) into triiodothyronine. The 3 and 4 in the names represent the number of iodine atoms it has. The T3 test simply measures how much of this hormone is present in your blood.

2024年5月13日 · The TT3 test measures the bound(T3) and free forms of T3(FreeT3) levels in the blood to evaluate the thyroid functioning if it has underactive(Hypothyroidism) or overactive(Hyperthyroidism) performance.

2019年9月19日 · What Is a T3 Test? Your thyroid gland is located in your neck, just below your Adam’s apple. The thyroid creates hormones and controls how your body uses energy and your body’s sensitivity to other...

2018年4月23日 · Low level of T3 is termed as a Low T3 Syndrome, Euthyroid Sick Syndrome or Non-Thyroidal Illness Syndrome. Interestingly, low T3 levels are not entirely related to the thyroid gland. The typical presentation of the euthyroid sick syndrome is low levels of T3 and TSH with raised T4. There is an increased level of reverse T3.