The Free T3 (FT3) Test measures the active form of thyroid hormone—unbound triiodothyronine—in the blood. It helps evaluate how well the thyroid is functioning and plays a key role in regulating metabolism and energy. This test is used to detect thyroid disorders like hyperthyroidism or hypothyroidism and is often done alongside TSH and T4 tests for a comprehensive thyroid assessment.
Unit 01-15, 16-20, Ground Floor, Laguna Central Bldg., Paseo Outlets, Greenfield City, Tagaytay-Balibago Road, Sta. Rosa City, Laguna