# Phthalic Anhydride

> This test measures the level of antibodies in your blood that react to phthalic anhydride, a chemical commonly used in the manufacturing of plastics and resins. It helps show whether your immune system has developed a sensitivity to this substance, which can cause breathing problems or skin irritation in exposed workers. This information helps doctors determine if your symptoms are related to an occupational allergy rather than an infection or other lung condition. However, this test alone cannot diagnose a specific disease or predict how severe a future reaction might be.

- Labcorp code: 602667
- 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=602667&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.