17-OH Progesterone

17-Hydroxyprogesterone (17-OHP) is a steroid hormone and an important biomarker used primarily to assess adrenal gland function. It is a precursor in the production of cortisol and androgens, and its levels are especially useful in diagnosing Congenital Adrenal Hyperplasia (CAH), adrenal tumors, hyperplasia, and infertility.