# Adrenal 21-Hydroxylase Autoantibodies (Endocrine Sciences)

> This test looks for specific antibodies in your blood that attack the 21-hydroxylase enzyme found in your adrenal glands. It helps show whether your immune system is mistakenly damaging these glands, which is a primary cause of Addison's disease.

- Labcorp code: 504805
- Category: [Autoimmunity](https://picardo.health/labs/tests/autoimmunity.md)
- Sample: blood
- Labcorp turnaround: 7–10 days
- Collection: free at a Labcorp location, or $75.00 at home.
- Without a doctor: yes. People order it themselves, with no doctor's visit or referral.
- Price: shown on the review page its order link opens. Opening it orders nothing.
- Order link: https://app.picardo.health/labs/order?tests=504805&ref=assistant

## About ordering

People order for themselves, with no doctor's visit or referral, and results arrive in their Picardo account. Ordering is open to adults 18 and over in the US, except New York, New Jersey, Rhode Island, Pennsylvania, Maryland, Massachusetts, Hawaii and Maine. General health information, not medical advice.