Testosterone Free Calc

Free testosterone (approximately 2-3%) is the portion of testosterone that is not bound to any proteins in the blood and is “free” to enter the cells and exert biological effects. 33-54% percent is weakly bound to albumin (called BIOAVAILABLE), with the rest bound to SHBG (44-65%).

Available Tests

FDX 00
FDX 19
Full Biomarkers +
FDX 27
Full Biomarkers +
FDX 28
Full Biomarkers +
FDX 33
Full Biomarkers +
FDX 41

Example Snapshot Report

The FDX Method

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Additional Resources