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 important for many body processes. It helps your nerves and muscles work well, prevents blood clots, and boosts the immune system. Vitamin E is a type of antioxidant, a substance that protects cells from damage.

Most people get the right amount of vitamin E from their diet. Vitamin E is found naturally in many foods, including green, leafy vegetables, nuts, seeds, and vegetable oils. If you have too little or too much vitamin E in your body, it can cause serious health problems.

Other names: tocopherol test, alpha-tocopherol test, vitamin E, serum


To evaluate vitamin E deficiency and excess and to monitor its absorption.

To screen premature babies who are at higher risk of vitamin E deficiency.


Testing is needed if symptoms of vitamin E deficiency (e.g. muscle weakness, slow reflexes, difficulty or unsteady walking, vision problems) or of vitamin E excess are present. Vitamin E levels may reveal the way your body is digesting and using nutrients, indicating certain disorders if levels are too high or low.

    • Why do I need this test?


    • You may need a vitamin E test if you have symptoms of vitamin E deficiency (not getting or absorbing enough vitamin E) or of vitamin E excess (getting too much vitamin E).


    • Symptoms of a vitamin E deficiency include:
    • Muscle weakness
    • Slow reflexes
    • Difficulty or unsteady walking
    • Vision problems


    • Vitamin E deficiency is very rare in healthy people. Most of the time, vitamin E deficiency is caused by a condition where nutrients are not properly digested or absorbed. These include Crohn's disease, liver disease, cystic fibrosis, and some rare genetic disorders. Vtamin E deficiency may also be caused by a very low-fat diet.


    • Symptoms of vitamin E excess include:
    • Diarrhea
    • Nausea
    • Fatigue

  • Vitamin E excess is also rare. It's usually caused by taking too many vitamins. If not treated, excess vitamin E can lead to serious health problems, including an increased risk of stroke.
Vitamin E

Vitamin E

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Note: The medical information provided here in this website is for informational purposes only and is not to be used as a substitute for professional medical advice, diagnosis or treatment.