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Estradiol (E2)

Mnemonic:    [ESTRADIOL]
Name:    Estradiol (E2)
Specimen:    1 mL serum from a Red SST or Red top tube, or plasma from a Green PST. EDTA plasma may also be used.

If testing is to be delayed for >48 hours, freeze the serum/plasma.
Minimum Spec:    0.3 mL
Spec Stability:    Stable 2 days refrigerated.
Reference Range:    Follicular phase 27 - 161 pg/mL
 Pre-ovulatory phase 187 - 382 pg/mL
 Luteal phase 33 - 201 pg/mL
 Post-menopausal females 5 - 38 pg/mL
 Normal Males 5 - 66 pg/mL
  Method:    Chemiluminescent Immunoassay
Note:    Estrogen test for non-pregnant patients.