# 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.

- Labcorp code: 004900
- Category: [Immune Regulation](https://picardo.health/labs/tests/immune-regulation.md)
- Labcorp turnaround: 5–7 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=004900&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.