Estradiol (E2) is the primary form of estrogen in the body, primarily produced and secreted by the ovaries, adrenal cortex, and placenta. It plays a key role in the development and function of reproductive organs and is responsible for the formation of secondary sex characteristics in women, such as breast development and the regulation of the menstrual cycle.
This test also helps in assessing FSH (Follicle Stimulating Hormone) levels, as both estradiol and FSH are closely linked in regulating reproductive health.