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.
| Age | Conventional Units | SI Units (Conventional Units × 3.67) | |||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Prepubertal | |||||||||||||||||||||||||||||||||||||||||
| Male and female | Less than 15 pg/mL | Less than 55.1 pmol/L | |||||||||||||||||||||||||||||||||||||||
| Adult male | 8–35 pg/mL | 29.4–128.4 pmol/L | |||||||||||||||||||||||||||||||||||||||
| Adult female | |||||||||||||||||||||||||||||||||||||||||
| Follicular phase | 30–100 pg/mL | 110.1–367 pmol/L | |||||||||||||||||||||||||||||||||||||||
| Luteal phase | 70–300 pg/mL | 256.9–1,101 pmol/L | |||||||||||||||||||||||||||||||||||||||
| Postmenopause | Less than 15 pg/mL | Less 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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