← Thyroid
Thyroid· LOINC 3024-7
Free T4
1.11ng/dL
In rangeUp 1.8% since 2 July · moving the right way
Where it sits
0.691.90
Trend
Hover any point for that drawShaded band is the optimal range · 0.82–1.77 ng/dL standard6 draws · Mar – Aug 2026
What this measures
The storage form of thyroid hormone, waiting to be converted into the active form.