Urine estradiol

Estradiol is a steroid hormone that is the most active endogenous estrogen. It is mainly produced by ovarian follicles, the corpus luteum, and the placenta during pregnancy. A very small amount is produced by the adrenal cortex and testes or is a testosterone metabolite. The main source of male estrogen. The level of estradiol in women's blood changes with the menstrual cycle. Examination of estradiol in blood and urine is of certain value in the diagnosis of endocrine and gynecological diseases such as precocious puberty and dysplasia.

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