Free Triiodothyronine

Free Triiodothyronine (FT3) is the biologically active, unbound fraction of triiodothyronine (T3), a key thyroid hormone responsible for regulating metabolism, energy production, and growth. It represents the portion of T3 that is available for direct action on tissues.

The findings related to these particular clinical tests are a general guide and do not cover every possible scenario, this is because every patient is unique and these results only have true clinical significance when combined with the patient’s full medical history, a physical exam, and other diagnostic findings.

Phlebotomy service fee: £21.