# Human T-Cell Lymphotropic Virus 1, 2 (HTLV-1/HTLV-2) Differentiation

> This test measures specific antibodies in the blood to distinguish between Human T-Cell Lymphotropic Virus type 1 (HTLV-1) and type 2 (HTLV-2). It is typically performed after an initial screening test shows a reactive result to confirm the infection and identify exactly which virus is present. This helps doctors differentiate between the two types, as HTLV-1 is associated with certain nerve and blood disorders while HTLV-2 is less commonly linked to severe illness. This test is not used for general screening and cannot predict if or when specific symptoms will develop.

- Labcorp code: 164129
- 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=164129&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.