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Hormones
Estradiol
Clinical biomarkerSex hormoneBloodpmol/L
A circulating estrogen measurement.
What it measures
Serum estradiol concentration.
Why it matters
Used in reproductive, menopausal and endocrine assessment.
How to interpret it
Interpret by sex, menopausal/reproductive state, medications and assay sensitivity.
Important limitations
Not a stand-alone longevity biomarker.
Evidence status
Clinical biomarker
Established hormone measurement with defined clinical uses.
Research & guidance
Original papers, validation studies, reviews and clinical guidance connected to this measurement.
For education and evidence exploration, not diagnosis or individualized medical advice.