Thyroid Function
Measures thyroid hormone binding capacity
Reflects binding protein availability. Used with total T4 to calculate free thyroxine index. Less commonly used with free hormone assays available.
24-39%
| Provider | Includes Test | Annual Cost | Total Biomarkers |
|---|---|---|---|
 Superpower | ✓ | $199 | 100+ |
 WHOOP Advanced Labs | — | $349 | 65 |
 Labcorp OnDemand | — | $398 | 30+ |
| — | $486 | 40+ | |
| — | $468 | 83 | |
| — | $798 | 100+ | |
 InsideTracker | — | $680 | 48 |
 Function Health | — | $499 | 100+ |
| — | $900 | 70+ | |
| — | $1150 | 110 |
This information is for educational purposes only and is not medical advice. Always consult with a qualified healthcare provider about your specific health needs and before making decisions about blood testing.
