Vitamin D3 (25 OH)

A measure of the level of 25 (OH) D in the blood. Vitamin D is essential for bone health, brain health and immune function. Levels may indicate a deficiency due to inadequate exposure to sunlight, genetics, insufficient dietary intake, or toxicity due to excessive supplementation; and can be associated with risks of Cancer, Hypertension, chronic pain and inflammation, Diabetes and Depression.

Available Tests

FDX 00


Full Biomarkers +
FDX 34


Full Biomarkers +
FDX 21


Full Biomarkers +
FDX 03


FDX 32


Full Biomarkers +
FDX 18


FDX 26


Full Biomarkers +
FDX 25


Full Biomarkers +
FDX 33


Full Biomarkers +

Patient Test Info Sheet

Example Snapshot Report

The FDX Method

Find a Blood Draw

Additional Resources