# Chlamydia pneumoniae, IgG, IgM, IgA

> This test measures antibodies in your blood that your immune system creates to fight Chlamydia pneumoniae, a bacteria that causes respiratory infections. It helps show whether a persistent cough, pneumonia, or sinus issue is related to this specific bacterial exposure. By identifying these antibodies, doctors can differentiate this infection from other causes of respiratory illness. However, the presence of antibodies only indicates past or recent exposure and does not diagnose an active infection by itself.

- Labcorp code: 139317
- Category: [Infections](https://app.picardo.health/labs/tests/infections.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=139317&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.