What is a 17-hydroxyprogesterone (17-OHP) test? This test measures the amount of 17-hydroxyprogesterone (17-OHP) in the blood. 17-OHP is a hormone made by the adrenal glands, two glands located on top of the kidneys. The adrenal glands make several hormones, including cortisol. Cortisol is important for maintaining blood pressure, blood sugar, and some functions of the immune […]

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