Measures free triiodothyronine (T3) for accurate assessment of active thyroid hormone
Conversion efficiency helps determine if T4 is effectively converted to T3
Supports diagnosis of hyperthyroidism and identification of hormone-related symptoms
No fasting required for convenient sample collection
Results delivered securely via private portal, not shared with insurance providers
Summarized by Shop
The T3 Free test measures the amount of "free" triiodothyronine in your blood. T3 is the most active form of thyroid hormone and is responsible for regulating your body’s temperature, heart rate, and metabolism. While T4 is produced in higher quantities, T3 is the hormone that actually does most of the work at the cellular level. Measurin
