# Intrinsic Factor Blocking Antibodies

> This test detects antibodies that attack intrinsic factor, a protein produced by the stomach that is required to absorb vitamin B12. It helps determine if your immune system is blocking B12 absorption, which is a key feature of a condition called pernicious anemia.

- Labcorp code: 010413
- Category: [Autoimmunity](https://picardo.health/labs/tests/autoimmunity.md)
- Sample: blood
- Labcorp turnaround: 2–4 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=010413&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.