# Glial Fibrillary Acid Protein (GFAP), Plasma

> This test measures the level of Glial Fibrillary Acidic Protein (GFAP), a substance released into the blood when specific support cells in the brain are injured. It helps show whether there is active damage or inflammation in the nervous system, which is often checked after head trauma or in suspected neurological decline.

- Labcorp code: 484440
- Category: [Brain Health](https://picardo.health/labs/tests/brain-health.md)
- Sample: blood
- Labcorp turnaround: 1–3 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=484440&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.