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Vitamin E (Alpha-Tocopherol)
Vitamins

Vitamin E (Alpha-Tocopherol)

Also known as: Vit E, Tocopherol
COMMON RANGE
5.5 – 17
mg/L
2.19
21.5
M
Mayo Clinic Laboratories
Adult
↗
See all sources ↓
CONVERT & COMPARE
mg/L
=
26.2
µmol/L
=
26.2
umol/L
=
26.2
mcmol/L

Reference ranges by source

Published adult intervals: 4, from 3 named sources, shown in mg/L.
SOURCE
SEX
AGE
RANGE
VISUAL
CITE
A
ARUP Laboratories
All
≥18y
5.5 – 18 mg/L
M
Mayo Clinic Laboratories
All
0–18y
3.8 – 18.4 mg/L
M
Mayo Clinic Laboratories
All
≥18y
5.5 – 17 mg/L
Q
Quest Diagnostics
All
≥18y
5.7 – 19.9 mg/L
A
ARUP Laboratories
All · ≥18y
↗
5.5 – 18 mg/L
M
Mayo Clinic Laboratories
All · 0–18y
↗
3.8 – 18.4 mg/L
M
Mayo Clinic Laboratories
All · ≥18y
↗
5.5 – 17 mg/L
Q
Quest Diagnostics
All · ≥18y
↗
5.7 – 19.9 mg/L

About Vitamin E (Alpha-Tocopherol)

A vitamin E test measures the amount of vitamin E in your blood. Vitamin E (also known as tocopherol or alpha-tocopherol) is a nutrient that is found in every cell of your body. It helps your nerves and muscles work well, prevents blood clots, and boosts your immune system so it can fight off infections from germs.
Vitamin E is a type of antioxidant, which means that it protects cells from damage. But if you have too little or too much vitamin E in your body, it can cause serious health problems.
Most people get the right amount of vitamin E from foods, including vegetable oils, nuts, seeds, avocados, and green, leafy vegetables. Vitamin E is also added to foods such as certain cereals, fruit juices, and margarine. The amount of vitamin E you get from foods doesn't cause harmfully high levels of vitamin E in your body.
High levels usually happen from taking too many vitamin E supplements. Low levels are often caused by digestive diseases, including malabsorption disorders that make it difficult for your body to digest fat. Your body needs fat to absorb vitamin E.
Main source: MedlinePlus ↗

Useful for

Find out if you are absorbing enough vitamin E, especially if you have a disorder that affects how your body uses vitamin E.
Check vitamin E levels in premature babies. Babies born before 37 weeks of pregnancy often lack vitamin E and may develop serious health problems if they aren't treated.
Find out if you are getting too much vitamin E, especially if you have symptoms and have been taking vitamin E supplements.
Main source: MedlinePlus ↗

Interpretation

Normal vitamin E levels vary with age. Your test results should say if your results are normal for your age.
Low vitamin E levels mean you are not getting or absorbing enough vitamin E. Your health care provider will use your medical history and the results from other tests to diagnose the cause. You can usually treat vitamin E deficiency by taking vitamin supplements and treating any conditions that may be blocking absorption.
High vitamin E levels mean you are getting too much vitamin E. If you have been taking vitamin E supplements, you will need to stop. If vitamin E has caused problems with bleeding, your provider may also prescribe medicines to treat you.
For general wellness information only. Talk to a clinician about your specific results.
Main source: MedlinePlus ↗
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Sources

Last updated 2026-05-02
This page presents source-specific reference data and sourced explanations. For general wellness information only. This is not medical advice. For diagnosis or treatment of any condition, talk to a qualified clinician.
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