Want to understand the marker?
Read what it measures and how to interpret it in context.
Medical disclaimer
This tool is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional for interpretation of your results.
Estimate free oestradiol from your results
Use total oestradiol, SHBG and albumin from the same blood draw. Selected Hormone Health panels include the measurements needed for this estimate.
Key points
- Estimates free and bioavailable oestradiol from total oestradiol, SHBG and albumin
- Uses the mass-action method evaluated by Rinaldi and colleagues
- Free oestradiol is unbound; bioavailable oestradiol adds the fraction loosely bound to albumin
- Use results from the same blood draw where possible. Albumin defaults to 43 g/L when no measured value is available
- No universal reference band is shown because oestradiol varies with sex, age, cycle stage, hormone use, assay and laboratory
- This is a calculated estimate, not a direct measurement. A healthcare professional can interpret it in context
Quick Facts
- Category
- Hormones
Related Converters
Medical disclaimer
This tool is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional for interpretation of your results.
See your wider hormone profile
Measure total oestradiol, SHBG, albumin and the related hormones that give this estimate its clinical context.