T3, Free

The Free T3 test measures the level of free triiodothyronine (T3) in the blood. T3 is a thyroid hormone that plays a critical role in regulating metabolism, energy production, and overall bodily functions. Unlike total T3, the free T3 test specifically measures the fraction of T3 that is not bound to proteins in the blood, which is the active form available to tissues.

Test Details:

Sample Type: Serum	Tube Type: SST
Collection Method: In person at a Lab location	Results: 1-6 days from sample arrival at our lab
Age: 18+