Preferred Specimen(s) 1.0 mL Serum
Transport Container Plastic screw cap vial
Transport Temperature
- Ambient 7 days,
- Refrigerated 7 days
Reject Criteria
- Grossly hemolyzed,
- lipemic specimens
Methodology Chemiluminescence
Clinical Significance 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.