Estradiol

General

Synonym/Acronym:
E2.

Rationale
To assist in diagnosing female fertility problems that may occur from tumor or ovarian failure.

Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.

Normal Findings
Method: Liquid chromatography/mass spectrometry.

AgeConventional UnitsSI Units (Conventional Units × 3.67)
Prepubertal
Male and femaleLess than 15 pg/mLLess than 55.1 pmol/L
Adult male8–35 pg/mL29.4–128.4 pmol/L
Adult female
Follicular phase30–100 pg/mL110.1–367 pmol/L
Luteal phase70–300 pg/mL256.9–1,101 pmol/L
PostmenopauseLess than 15 pg/mLLess than 55.1 pmol/L
Levels for males and females are elevated at birth but decrease in a few days to prepubertal values. Levels vary significantly during the female menstrual cycle.

Critical Findings and Potential Interventions
N/A

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