# Histamine Determination, Urine

> This test measures the amount of histamine in your urine, a chemical released by your immune system during allergic reactions. It helps doctors evaluate symptoms like unexplained flushing, itching, or sudden drops in blood pressure that suggest your body is producing too much histamine.

- Labcorp code: 144618
- Category: [Allergies & Sensitivities](https://picardo.health/labs/tests/allergies-sensitivities.md)
- Sample: urine
- Labcorp turnaround: 2–4 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=144618&ref=assistant

## Results reported (2)

- Histamine, ug/L, U
- Histamine, ug/24hr, U

## 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.