Estrogens, Total (IA) Unit Converter

Total estrogens is a blood test that measures the combined levels of the three main estrogen hormones: estrone (E1), estradiol (E2), and estriol (E3). Estradiol is the most potent and predominant form during reproductive years, while estrone becomes the primary estrogen after menopause and estriol rises significantly during pregnancy.

This test provides an overall picture of estrogen status rather than measuring each type individually. It is commonly used when evaluating reproductive health, menopause status, and certain hormone-related conditions in both women and men.

In premenopausal women, estrogens are primarily produced by the ovaries, with smaller amounts from the adrenal glands and fat tissue. After menopause, fat cells become the main source. In men, estrogens are produced in smaller quantities by the testes, adrenal glands, and through conversion of testosterone in fat and other tissues.