# Isocyanate HDI

> This test measures specific antibodies in your blood to see if your immune system reacts to Hexamethylene Diisocyanate (HDI), a chemical used in industrial paints and foams. It helps show whether breathing problems or skin irritation may be caused by an allergic reaction to this substance, which is often related to workplace exposure. By identifying this specific sensitivity, the test helps distinguish occupational allergies from other types of asthma or dermatitis. However, a positive result indicates sensitization and does not confirm a diagnosis of occupational asthma without a full medical evaluation.

- Labcorp code: 602665
- 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=602665&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.