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Mayo Clinic Laboratories

Test Code E2 Estradiol, Serum

Performing Laboratory

ChristianaCare-Newark Campus

Methodology

Electrochemiluminescent Immunoassay

Specimen Requirements

Container/Tube:  Preferred: 4.5 mL Lithium Heparin (Mint Green top PST Gel) tube

Acceptable: 5.0 mL SST (Gold top) tube or 6.0 mL Serum (Red top) tube

Specimen:  Full tube
Collection Instructions:  For pediatrics, draw blood in a 0.5-mL green-top MICROTAINER®.
Note:  Label tube with patient’s full name and 1 additional unique patient identifier such as date of birth, medical record number, emergency ID number, date and time of draw, collector’s initials, and type of specimen.

Reference Values

Males

8-43 pg/mL
Females

Pregnant, 1st trimester:  215->4,300 pg/mL

Follicular:  13-166 pg/mL

Midcycle:  86-498 pg/mL

Luteal:  44-211 pg/mL

Postmenopausal:  <5-55 pg/mL

 

Day(s) Test Set Up

Monday through Friday

Routine Turnaround Time:  8 hours

STAT Turnaround Time:  1 hour