# CD4:CD8 Ratio Profile

> This test compares the levels of two specific types of white blood cells, called CD4 and CD8 cells, which work together to fight infections. It helps show how well your immune system is balanced and functioning, which is often monitored in conditions like HIV or chronic viral infections. This measurement helps doctors distinguish between a healthy immune response and a weakened or suppressed system. However, this ratio alone cannot diagnose a specific disease or identify the exact cause of an immune imbalance without further testing.

- Labcorp code: 505271
- Category: [Immune Regulation](https://app.picardo.health/labs/tests/immune-regulation.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=505271&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.