# Anti-TPO Ab (RDL)

> This test measures the level of thyroid peroxidase (TPO) antibodies in your blood, which are proteins that mistakenly attack your thyroid gland. It helps determine if an autoimmune disorder is the underlying cause of thyroid issues, such as Hashimoto’s disease or Graves’ disease.

- Labcorp code: 520018
- Category: [Thyroid](https://picardo.health/labs/tests/thyroid.md)
- Sample: blood
- Labcorp turnaround: 14–21 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=520018&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.