# Johnson Grass

> This test measures the level of specific antibodies in your blood that react to Johnson Grass pollen. It helps show whether your immune system treats this grass as a threat, which is useful for investigating symptoms like sneezing, runny nose, or itchy eyes. This testing helps identify if Johnson Grass is a specific trigger for your seasonal allergies compared to other plants. However, the test cannot determine exactly how severe a future allergic reaction will be or diagnose an allergy without a doctor reviewing your symptoms.

- Labcorp code: 602503
- Category: [Allergies & Sensitivities](https://app.picardo.health/labs/tests/allergies-sensitivities.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=602503&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.