Free T3 (Triiodothyronine)
$45
- Sample
- Blood draw
- Preparation
- No fasting needed.
- Results in
- 1-3 business days after your sample reaches the lab
Tests are ordered by an independent licensed physician. This service does not replace care from your own doctor. Talk with a healthcare professional about your results.
Free T3 measures the active, unbound form of triiodothyronine, one of the two main hormones your thyroid produces. It’s generally checked alongside TSH and T4 rather than alone, since the three together give a much fuller view of thyroid function.
Before your visit: no necesita ayunar.