Specimen Requirements

Title

ESTRADIOL, FREE (Includes Estradiol Total)

Specimen Requirement

Collect 3mL serum from plain red top or SST. Serum must be separated from cells within 45 minutes of collection. If collected in plain red top, pour off serum into plastic transport tube, and indicate tube type on specimen.

 

Methodology

Liquid chromatography tandem mass spectrometry (LC/MS/MS); equilibrium dialysis

Stability

Room temp 1 day, Refrigerated 6 days, Frozen 32 days

Reference Range

By Report*

Turnaround

9-12 Days

Clinical Use

Test Code

WFEST