A free T3 blood test, also known as a free triiodothyronine (T3) test, measures the amount of triiodothyronine in the blood. This hormone is made by the thyroid gland, which is responsible for many body functions.
A free T3 blood test, also known as a free triiodothyronine (T3) test, measures the amount of triiodothyronine in the blood. This hormone is made by the thyroid gland, which is responsible for many body functions.
