What is "pregnanediol"

n. (context biochemistry English) A steroid formed by the metabolism of progesterone; it is excreted in the urine of pregnant women.

n. a compound found in women's urine during certain phases of the menstrual cycle and in the urine of pregnant women

Pregnanediol is an inactive metabolic product of progesterone. A test can be done to measure the amount of pregnanediol in urine, which offers an indirect way to measure progesterone levels in the body.