# Mannose-binding Lectin (MBL)

> This test measures the level of mannose-binding lectin (MBL), a protein in your blood that helps your immune system identify and destroy germs. It helps show whether a lack of this protein is making you more likely to get infections, which is often a concern for patients undergoing chemotherapy or those with chronic conditions like cystic fibrosis. This information helps doctors determine if a specific gap in your body's first line of defense is contributing to recurring illnesses. However, this test cannot diagnose a specific infection or determine the overall health of your entire immune system by itself.

- Labcorp code: 004900
- Category: [Immune Regulation](https://app.picardo.health/labs/tests/immune-regulation.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=004900&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.