Diagnostic Blood Test:

Total Estradiol (LC/MS)
Free Estradiol (Equilibrium Dialysis)

Estradiol or E2 is the principle estrogen in men and women. Estradiol plays important roles in neuroprotection, fertility, metabolism, and anabolism. Imbalanced levels of Estradiol may be associated with erectile dysfunction, low libido, gynecomastia (the growth of breast tissue), hair loss, reduced muscle strength, or low energy levels. The Estradiol, Sensitive test can more accurately measure levels of estradiol in men and post-menopausal women, who typically have lower levels of this hormone.

Total Estradiol is a measure of the total amount of Estradiol in the blood.

Free Estradiol is a measure of unbound Estradiol that is available to the body’s tissues.