17-hydroxyprogesterone (17-OHP)

17-hydroxyprogesterone (17-OHP)

This is the chemical that cortisol is made from. Children and adults with congenital adrenal hyperplasia (CAH) have much higher levels of 17-OHP in their blood because they cannot turn it into cortisol. Detecting increased amounts of 17-OHP in the blood is one of the tests that confirm the diagnosis of CAH.

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