# Walnut

> This test measures the amount of specific antibodies in your blood that react to proteins found in walnuts. It helps identify if your immune system is sensitive to this tree nut, which is useful for investigating symptoms like hives, swelling, or stomach pain after eating.

- Labcorp code: 602530
- Category: [Allergies & Sensitivities](https://picardo.health/labs/tests/allergies-sensitivities.md)
- Sample: blood
- Labcorp turnaround: 3–5 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=602530&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.