This test measures the levels of 3,3',5'-Triiodothyronine (reverse T3, rT3) in the blood. Reverse T3 is a version of the thyroid hormone that is not active in the body.
This test measures the levels of 3,3',5'-Triiodothyronine (reverse T3, rT3) in the blood. Reverse T3 is a version of the thyroid hormone that is not active in the body.