← Thyroid
Thyroid· LOINC 3051-0
Free T3
3.1pg/mL
In rangeUp 6.9% since 2 July · moving the right way
Where it sits
1.74.7
Trend
Hover any point for that drawShaded band is the optimal range · 2–4.4 pg/mL standard6 draws · Mar – Aug 2026
What this measures
The active thyroid hormone that actually sets your metabolic rate at the cell.