General
Synonym/Acronym:
E2.
Common Use:
To assist in diagnosing female fertility problems that may occur from tumor or ovarian failure.
Specimen:
Serum (1 mL) collected in a red- or tiger-top tube. Plasma (1 mL) collected in green-top (heparin) tube is also acceptable.
Normal Findings:
(Method: Immunoassay)
| Age | Conventional Units | SI Units (Conventional Units × 3.67) |
|---|
| 6 mo–10 yr | | |
| Male and female | Less than 15 pg/mL | Less than 55 pmol/L |
| 11–15 yr | | |
| Male | Less than 40 pg/mL | Less than 147 pmol/L |
| Female | 10–300 pg/mL | 37–1,100 pmol/L |
| Adult male | 10–50 pg/mL | 37–184 pmol/L |
| Adult female | | |
| Early follicular phase | 20–150 pg/mL | 73–551 pmol/L |
| Late follicular phase | 40–350 pg/mL | 147–1,285 pmol/L |
| Midcycle peak | 150–750 pg/mL | 551–2,753 pmol/L |
| Luteal phase | 30–450 pg/mL | 110–1,652 pmol/L |
| Postmenopause | Less than 20 pg/mL | Less than 73 pmol/L |
Estradiol has been found in Davis's Lab & Diagnostic Tests
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