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Login or RegisterMuch 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.
Fasting Required: NO
Preferred Specimen: Serum
Reference Range(s):
Estradiol, Free | |
Female | |
Follicular Stage | 0.43-5.03 pg/mL |
Mid-Cycle Stage | 0.72-5.89 pg/mL |
Luteal Stage | 0.40-5.55 pg/mL |
Postmenopausal | ≤0.38 pg/mL |
Adult Male | ≤0.45 pg/mL |
Estradiol | |
Female | |
Follicular Stage | 39-375 pg/mL |
Mid-Cycle Stage | 94-762 pg/mL |
Luteal Stage | 48-440 pg/mL |
Postmenopausal | ≤10 pg/mL |
Adult Male | ≤29 pg/mL |
Turnaround Time: 3 Days
Test Code: 36169