← All Biomarkers
Total T4
Total thyroxine (bound + free)
Also known as: T4,T4 Total,Total Thyroxine,T4 (Thyroxine) Total,T4 - Thyroxine,Thyroxine Total
Reference Ranges
Clinical Reference
4.5 – 12.0 μg/dL
Optimal Range
6.0 – 10.0 μg/dL
Upload your blood test to see how your Total T4 compares to reference and optimal ranges.
Upload Blood Test