# Anticardiolipin Antibodies (ACA), IgA, IgG, IgM, Quantitative

> This test measures specific antibodies in the blood that mistakenly attack cardiolipin, a substance found on the surface of cells and platelets. It helps show if the immune system is creating proteins that increase the risk of abnormal blood clots or pregnancy complications. Doctors use this test to help evaluate for antiphospholipid syndrome, an autoimmune clotting disorder. However, it cannot diagnose a condition on its own because infections can cause temporary changes in these levels, often requiring a retest to confirm the results.

- Labcorp code: 161950
- 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=161950&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.