Vitamin E
Vitamin E (alpha-tocopherol) measures the level of this fat-soluble antioxidant in your blood. Vitamin E protects cells from oxidative damage and supports immune function.
Category: Vitamins & Minerals
Also known as: vitamin e, alpha-tocopherol, tocopherol, vit e, A-Tocopherol Vit E
Reference range: 5.5–17 mg/L (Source: ABIM)
Standard unit: mg/L
High values may indicate
High vitamin E levels may indicate excessive supplementation, which can increase the risk of bleeding, interfere with blood clotting, and may be associated with an increased risk of hemorrhagic stroke.
Low values may indicate
Low vitamin E levels may indicate fat malabsorption disorders (such as cystic fibrosis or celiac disease), liver disease, or genetic conditions, and can lead to nerve damage and muscle weakness.
Frequently asked questions
- What is a normal Vitamin E level?
- A typical reference range for Vitamin E is 5.5–17 mg/L (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Vitamin E measured in?
- Vitamin E is most commonly reported in mg/L. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Vitamin E reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Vitamin E over time?
- Yes. Upload results from any lab and BloodId charts your Vitamin E over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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