17-Hydroxyprogesterone (17-OHP) Test

17-OHP is a hormone made by the adrenal glands. Measuring it in the blood is mainly used to screen for and follow up a condition called congenital adrenal hyperplasia. A higher level may suggest this condition and the need for more checks, while a normal level is reassuring. Your doctor reads the result together with your symptoms and other tests to reach a clear picture.