Estrogen, Serum (Estradiol)

Mint Green Plasma Separator Tube

Tube Type

Test ID LAB523
CPT Code(s) 82670
Group/Individual Test Individual
Laboratory Core Laboratory
Tube Station 30
Specimen Routine: 4 mL blood/Gold top serum separator tube / Also acceptable serum Red Top Tube
Micro: 500µL blood/Yellow top serum separator bullet/red top
Stability Spun/Separated: Room Temperature: 20 hours
Refrigerated: 48 hours
Frozen: 6 months
Availability Routine: 24 hrs/day
Turnaround Time Routine: 2 hours
Reference Range Normal: see Table below
Reference Ranges: Serum Estrogen*
Male: <39.8
Female (Postmenopausal): <32.2
Female (Ovulating): (pg/ml)
follicular phase 19.5-144.2
periovulatory (±3 days) 63.9-356.7
luteal phase 55.8-214.2
*Reference Ranges effective 7/13/2021
Testing is performed using Siemens Atellica Estradiol (eE2) Assay.  Different test methods should not be used interchangeably.  Heterophilic antibodies may cause interference. 

Reviewed by Christopher Parker on March 11, 2022

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514