Vitamin E (Alpha-Tocopherol)
Vitamin E is a fat-soluble antioxidant that protects cell membranes, lipoproteins, and polyunsaturated fatty acids from oxidative damage. Alpha-tocopherol is the most biologically active form and the one measured in standard blood tests.
Vitamin E deficiency is rare in healthy adults but can occur with fat malabsorption disorders (celiac disease, cystic fibrosis, liver disease). Symptoms include peripheral neuropathy, muscle weakness, and impaired immunity.
While vitamin E supplements were once widely recommended for heart health, large clinical trials have not confirmed cardiovascular benefit from supplementation, and high-dose supplements (> 400 IU/day) may increase all-cause mortality.
What It Measures
Serum alpha-tocopherol concentration reflecting vitamin E status and antioxidant capacity.
Reference Ranges
| Status | Range (mg/L) |
|---|---|
| Optimal | 12–20 mg/L |
| Normal | 5.5–17.0 mg/L |
| Borderline | 3.0–5.5 mg/L |
| Out of Range | < 3.0 mg/L |
How GATOR Tracks This
Lab Providers
Related Biomarkers
This content is for informational purposes only and does not constitute medical advice. Reference ranges may vary by laboratory and individual factors. Consult a qualified healthcare provider for interpretation of your results and treatment decisions.
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