# Celiac Antibodies tTG IgA and Total IgA With Reflex to tTG IgG and DGP IgG

> This test measures specific antibodies in your blood that the immune system creates in response to gluten, a protein found in wheat, barley, and rye. It also checks your total antibody levels to ensure the main test results are accurate. This screening helps show whether your body is launching an autoimmune attack on your small intestine, which is the primary sign of Celiac disease. While it helps distinguish Celiac disease from other digestive issues, a positive result typically requires a tissue biopsy to confirm the diagnosis.

- Labcorp code: 164047
- Category: [Autoimmunity](https://app.picardo.health/labs/tests/autoimmunity.md)
- Price: shown at checkout, before payment.
- Blood draw: free at a Labcorp location, or $75.00 at home.
- Order link: https://app.picardo.health/labs/order?tests=164047&ref=assistant

## About ordering

A licensed physician reviews every order before any test is run, and results arrive in the person's 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.