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Test Code YE2F Estradiol, Free, Serum

Clinical Information

Much of Estradiol is bound to proteins. The unbound portion and Estradiol bound to proteins with low affinity reflect the free concentration. The Free Estradiol may better correlate with medical conditions than the Total Estradiol concentrations.

Synonym

  • YE2F

Profile Information

Estradiol, Free and  Estradiol

Specimen Required

1 mL serum from plain red tube

Specimen Stability Information

Ambient: 24 hours
Refrigerated (preferred): 7 days
Frozen : 28 days

Rejected Due To

  • Serum separator tubes (SST)
  • Hemolysis
  • Lipemia
  • Grossly icteric

Reference Values

See Report

Method Description

Chromatography/ Mass Spectrometry Equilibrium Dialysis

Performing Lab

Quest Diagnostics Nichols Institute - San Juan Capistrano, CA

33608 Ortega Highwa

San Juan Capistrano, CA 92675-204

Day(s) Performed

Monday and Wednesday

Report Available

9 days

Reporting Name

Estradiol Free

CPT Code Information

82670
82681

LOINC Code Information

Estradiol, Free: 2240-0
Estradiol: 2243-4