T3 Test
What Is A Triiodothyronine (T3) Test?This test checks your blood for the amount of triiodothyronine (T3). T3 is one of the two main hormones made by your thyroid, a small butterfly-shaped gland near your throat. Thyroxine is the name of the other hormone (T4) Together, T3 and T4 control how your body uses energy. These…