17-hydroxyprogesterone (17-OHP) is a steroid hormone, derived from cholesterol, and is produced as part of the process of making the hormone cortisol. This test measures the amount of 17-OHP in the blood to detect and/or evaluate congenital adrenal hyperplasia (CAH), an inherited condition that results in decreased adrenal cortisol and aldosterone and increased male sex hormone (androgen) production.
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