# Testosterone, Free and Weakly Bound

> This test measures the specific amount of testosterone in your blood that your body can actually use, often called bioavailable testosterone. It helps show whether you have enough active hormone to support muscle strength, energy levels, and sexual health. This measurement is useful for ruling out hormone deficiencies that standard tests might miss due to how testosterone binds to proteins in the blood. While it detects active levels, this test does not diagnose the specific medical reason why your testosterone might be low or high.

- Labcorp code: 143255
- Category: [Hormones](https://app.picardo.health/labs/tests/hormones.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=143255&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.