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Individual test · Labcorp 143255

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.

How ordering works

  1. 1

    Review the order and pay on Picardo. Your account is set up as you check out.

  2. 2

    A licensed physician reviews the order and decides whether to authorize it.

  3. 3

    Give blood at a Labcorp location, or book an at-home draw for $75.00.

  4. 4

    Your results arrive in your Picardo account.

For adults 18+ in the US. Lab orders aren’t available in New York, New Jersey, Rhode Island, Pennsylvania, Maryland, Massachusetts, Hawaii or Maine.