Hormone — Estrogen

Estradiol (E2)

Estradiol is the dominant circulating estrogen, present in both men and women.

Reference range

Reference ranges vary by lab, age and sex. Your own lab report carries the authoritative range, and your clinician reads it with you.

Why it matters

In male hormone optimization, estradiol is essential for libido, joint comfort, bone density, and lipid health — but excess (typically from aromatization of testosterone) can drive water retention, mood changes, and gynecomastia. Suppressing estradiol too aggressively is a common error and is associated with joint symptoms and lipid worsening. REVRCEL clinicians use the sensitive (LC/MS-MS) assay rather than the standard immunoassay because the standard assay is unreliable in men.

How REVRCEL clinicians read it

Always order the sensitive assay in male members. Treat the symptom + lab pattern, not the number alone.

Included in

Common questions

Is high estradiol bad for men?

Not always. Estradiol is essential for joint, bone, and cardiovascular health in men. Excess relative to testosterone can cause symptoms; suppression is rarely the right first move.

Why does REVRCEL use the sensitive estradiol assay?

The standard immunoassay is unreliable in men. The LC/MS-MS sensitive assay is the standard of care.

Related biomarkers

Total TestosteroneSHBG (Sex Hormone Binding Globulin)Free Testosterone

Statements have not been evaluated by the FDA. This page is educational and is not medical advice.

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