At a Glance
Why Get Tested?
To screen for, detect, and monitor treatment for congenital adrenal hyperplasia (CAH); sometimes to help rule out other conditions with similar symptoms
When to Get Tested?
As part of a routine newborn screen; when an infant's sex is not obvious (ambiguous genitalia); when a young female has increased growth of facial and body hair (hirsutism) or other symptoms that could be related to elevated male sex hormones (virilization); when a male child has premature sexual development; periodically to monitor CAH treatment
A blood sample drawn from a vein in your arm or blood from a heelstick for an infant
Test Preparation Needed?
None, but an early morning collection may be requested; it may also be requested that the blood sample be collected at a specific time during a woman's menstrual cycle.