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<span>Vitamin E (Tocopherol) Test</span>
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<a name="start" id="start"></a>
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<h1>Vitamin E (Tocopherol) Test</h1>
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<div class="main">
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<section><div class="mp-content"><h2>What is a vitamin E (tocopherol) test?</h2>
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<p>A vitamin E test measures the amount of <a data-tid="5385" href="https://medlineplus.gov/vitamine.html">vitamin E</a> 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 <a data-tid="295" href="https://medlineplus.gov/immunesystemanddisorders.html">immune system</a> so it can fight off <a data-tid="158" href="https://medlineplus.gov/bacterialinfections.html">infections from germs</a>.</p>
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<p>Vitamin E is a type of <a data-tid="1590" href="https://medlineplus.gov/antioxidants.html">antioxidant</a>, 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.</p>
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<p>Most people get the right amount of vitamin E from <a data-tid="36" href="https://medlineplus.gov/nutrition.html">foods</a>, including vegetable oils, nuts, seeds, avocadoes, 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 high levels.</p>
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<p>High levels usually happen from taking too many vitamin E supplements. Low levels are often caused by <a data-tid="29" href="https://medlineplus.gov/digestivediseases.html">digestive diseases</a>, including <a data-tid="5459" href="https://medlineplus.gov/malabsorptionsyndromes.html">malabsorption disorders</a> that make it difficult for your body to digest fat. Your body needs fat to absorb vitamin E.</p>
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<p>Other names: tocopherol test, alpha-tocopherol test, vitamin E, serum</p></div>
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</section>
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<section><div class="mp-content"><h2>What is it used for?</h2>
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<p>A vitamin E test may be used to:</p>
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<ul>
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<li>Find out if you are absorbing enough vitamin E, especially if you have a disorder that affects how your body uses vitamin E.</li>
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<li>Check vitamin E levels in <a data-tid="1519" href="https://medlineplus.gov/prematurebabies.html">premature babies</a>. Babies born before 37 weeks of pregnancy often lack vitamin E and may develop serious health problems if they aren't treated.</li>
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<li>Find out if you are getting too much vitamin E, especially if you have symptoms and have been taking vitamin E supplements.</li>
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</ul></div>
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</section>
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<section><div class="mp-content"><h2>Why do I need a vitamin E test?</h2>
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<p>You may need a vitamin E test if you have symptoms of vitamin E deficiency (low levels of vitamin E) or vitamin E excess (high levels of vitamin E).</p>
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<p><strong>Symptoms of a vitamin E deficiency</strong> often involve damage to the nerves and muscles. They include:</p>
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<ul>
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<li>Muscle weakness</li>
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<li>Loss of feeling in your arms and legs</li>
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<li><a data-tid="5673" href="https://medlineplus.gov/walkingproblems.html">Problems walking</a> and controlling your body movements</li>
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<li><a data-tid="165" href="https://medlineplus.gov/visionimpairmentandblindness.html">Vision problems</a></li>
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</ul>
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<p>Vitamin E deficiency is very uncommon in healthy people. Most of the time, it's caused by conditions that prevent your body from properly absorbing vitamin E, including:</p>
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<ul>
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<li><a data-tid="119" href="https://medlineplus.gov/crohnsdisease.html">Crohn's disease</a></li>
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||
<li><a data-tid="310" href="https://medlineplus.gov/liverdiseases.html">Liver disease</a></li>
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||
<li><a data-tid="203" href="https://medlineplus.gov/cysticfibrosis.html">Cystic fibrosis</a></li>
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<li><a data-tid="897" href="https://medlineplus.gov/celiacdisease.html">Celiac disease</a></li>
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<li><a data-tid="5876" href="https://medlineplus.gov/pancreatitis.html">Pancreatitis</a></li>
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<li>Certain <a data-tid="33" href="https://medlineplus.gov/geneticdisorders.html">genetic disorders</a>, including <a data-pid="14997" href="https://medlineplus.gov/genetics/condition/ataxia-with-vitamin-e-deficiency/">ataxia with vitamin E deficiency</a> and <a data-pid="14771" href="https://medlineplus.gov/genetics/condition/abetalipoproteinemia/">abetalipoproteinemia</a> (very uncommon)</li>
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</ul>
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<p>Eating an extremely low-fat diet can also lead to a vitamin E deficiency.</p>
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<p><strong>Symptoms of too much vitamin E include:</strong></p>
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<ul>
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<li>Diarrhea</li>
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<li>Nausea</li>
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<li>Fatigue</li>
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</ul>
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<p>Vitamin E excess is also uncommon. It usually happens from taking too many vitamin E <a data-tid="3538" href="https://medlineplus.gov/dietarysupplements.html">supplements</a>. Without treatment, too much vitamin E can increase your risk of <a data-tid="6039" href="https://medlineplus.gov/bleeding.html">bleeding</a>, including bleeding in the brain, called a <a data-tid="6263" href="https://medlineplus.gov/hemorrhagicstroke.html">hemorrhagic stroke</a>.</p></div>
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</section>
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<section><div class="mp-content"><h2>What happens during a vitamin E test?</h2>
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<p>A health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.</p>
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</div>
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</section>
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<section><div class="mp-content"><h2>Will I need to do anything to prepare for the test?</h2>
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<p>You will probably need to <a data-pid="858" href="https://medlineplus.gov/lab-tests/fasting-for-a-blood-test/">fast</a> (not eat or drink) for 12–14 hours before the test.</p></div>
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</section>
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<section><div class="mp-content"><h2>Are there any risks to the test?</h2>
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||
<p>There is very little risk to having a blood test. You may have slight pain or bruising at the spot where the needle was put in, but most symptoms go away quickly.</p>
|
||
</div>
|
||
</section>
|
||
|
||
<section><div class="mp-content"><h2>What do the results mean?</h2>
|
||
<p><strong>Normal vitamin E levels</strong> vary with age. Your test results should say if your results are normal for your age.</p>
|
||
<p><strong>Low vitamin E levels</strong> mean you are not getting or absorbing enough vitamin E. Your 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.</p>
|
||
<p><strong>High vitamin E levels</strong> 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 <a data-tid="166" href="https://medlineplus.gov/bleedingdisorders.html">problems with bleeding</a>, your provider may also prescribe medicines to treat you.</p>
|
||
<p>Learn more about <a data-pid="806" href="https://medlineplus.gov/lab-tests/how-to-understand-your-lab-results/">laboratory tests, reference ranges, and understanding results</a>.</p></div>
|
||
</section>
|
||
|
||
<section><div class="mp-content"><h2>Is there anything else I need to know about a vitamin E test?</h2>
|
||
<p>Some people believe vitamin E supplements can help prevent certain disorders. But there is no solid evidence that vitamin E has any effect on <a data-tid="277" href="https://medlineplus.gov/heartdiseases.html">heart disease</a>, <a data-tid="25" href="https://medlineplus.gov/cancer.html">cancer</a>, <a data-tid="247" href="https://medlineplus.gov/eyediseases.html">eye disease</a>, or mental function.</p>
|
||
<p>Taking Vitamin E supplements may affect how certain medicines work, including certain <a data-tid="4861" href="https://medlineplus.gov/bloodthinners.html">blood thinners</a> and cancer medicines. It may also affect your body's ability to use other vitamins. So, before taking any dietary supplements, always talk with your provider to find out if they are safe for you.</p></div>
|
||
</section>
|
||
|
||
<section><div class="mp-refs mp-content"><h2>References</h2>
|
||
<ol>
|
||
<li>Blount BC, Karwowski, MP, Shields PG, Morel-Espinosa M, Valentin-Blasini L, Gardner M, Braselton M, Brosius CR, Caron KT, Chambers D, Corstvet J, Cowan E, De Jesús VR, Espinosa P, Fernandez C, Holder C, Kuklenyik Z, Kusovschi JD, Newman C, Reis GB, Rees J, Reese C, Silva L, Seyler T, Song MA, Sosnoff C, Spitzer CR, Tevis D, Wang L, Watson C, Wewers, MD, Xia B, Heitkemper DT, Ghinai I, Layden J, Briss P, King BA, Delaney LJ, Jones CM, Baldwin, GT, Patel A, Meaney-Delman D, Rose D, Krishnasamy V, Barr JR, Thomas J, Pirkl, JL. Vitamin E Acetate in Bronchoalveolar-Lavage Fluid Associated with EVALI. N Eng J Med [Internet]. 2019 Dec 20 [cited 2019 Dec 23];10.1056/NEJMoa191643. Available from: <a href="https://www.ncbi.nlm.nih.gov/pubmed/31860793" target="bibliowin">https://www.ncbi.nlm.nih.gov/pubmed/31860793</a></li>
|
||
<li>Harvard T.H. Chan School of Public Health [Internet]. Boston: The President and Fellows of Harvard College; c2022. Vitamin E; [cited 2022 May 11]; [about 3 screens]. Available from: <a href="https://www.hsph.harvard.edu/nutritionsource/vitamin-e/" target="bibliowin">https://www.hsph.harvard.edu/nutritionsource/vitamin-e/</a></li>
|
||
<li>Kemnic TR, Coleman M. Vitamin E Deficiency. [Updated 2021 Jul 18; cited 2022 May 12]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: <a href="https://www.ncbi.nlm.nih.gov/books/NBK519051/" target="bibliowin">https://www.ncbi.nlm.nih.gov/books/NBK519051/</a></li>
|
||
<li>LabCorp [Internet]. Burlington (NC): Laboratory Corporation of America® Holdings; c2022. Vitamin E; [cited 2022 May 12]; [about 9 screens]. Available from: <a href="https://www.labcorp.com/tests/070140/vitamin-e-and-tocopherol" target="bibliowin">https://www.labcorp.com/tests/070140/vitamin-e-and-tocopherol</a></li>
|
||
<li>Mayo Clinic Medical Laboratories [Internet]. Mayo Foundation for Medical Education and Research; 1995–2022. Vitamin E, Serum: Clinical and Interpretive; [cited 2022 May 11]; [about 2 screens]. Available from: <a href="https://www.mayocliniclabs.com/test-catalog/overview/42358#Clinical-and-Interpretive" target="bibliowin">https://www.mayocliniclabs.com/test-catalog/overview/42358#Clinical-and-Interpretive</a></li>
|
||
<li>Merck Manual Consumer Version [Internet]. Kenilworth (NJ): Merck & Co., Inc.; c2022. Vitamin E Deficiency; [reviewed 2020 Nov; cited 2022 May 11]; [about 3 screens]. Available from: <a href="https://www.merckmanuals.com/home/disorders-of-nutrition/vitamins/vitamin-e-deficiency" target="bibliowin">https://www.merckmanuals.com/home/disorders-of-nutrition/vitamins/vitamin-e-deficiency</a></li>
|
||
<li>National Cancer Institute [Internet]. Bethesda (MD): U.S. Department of Health and Human Services; NCI Dictionary of Cancer Terms: vitamin E; [cited 2022 May 11]; [about 1 screens]. Available from: <a href="https://www.cancer.gov/publications/dictionaries/cancer-terms/def/vitamin-e" target="bibliowin">https://www.cancer.gov/publications/dictionaries/cancer-terms/def/vitamin-e</a></li>
|
||
<li>National Heart, Lung, and Blood Institute [Internet]. Bethesda (MD): U.S. Department of Health and Human Services; Blood Tests; [updated 2022 Mar 24; cited 2022 May 11]; [about 7 screens]. Available from: <a href="https://www.nhlbi.nih.gov/health/blood-tests" target="bibliowin">https://www.nhlbi.nih.gov/health/blood-tests</a></li>
|
||
<li>National Institutes of Health: Office of Dietary Supplements [Internet]. Bethesda (MD): U.S. Department of Health and Human Services; Vitamin E: Fact Sheet for Consumers [updated 2021 Mar 22; cited 2022 May 12]; [about 9 screens]. Available from: <a href="https://ods.od.nih.gov/factsheets/VitaminE-Consumer/" target="bibliowin">https://ods.od.nih.gov/factsheets/VitaminE-Consumer/</a></li>
|
||
<li>Owen KN, Dewald O. Vitamin E Toxicity. [Updated 2021 Nov 14; cited 2022 May 12]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: <a href="https://www.ncbi.nlm.nih.gov/books/NBK564373/" target="bibliowin">https://www.ncbi.nlm.nih.gov/books/NBK564373/</a></li>
|
||
<li>Quest Diagnostics [Internet]. Quest Diagnostics; c2000–2019. Test Center: Vitamin E (Tocopherol); [cited 2022 May 11]; [about 3 screens]. Available from: <a href="https://testdirectory.questdiagnostics.com/test/test-detail/931/vitamin-e-tocopherol?p=r&q=Vitamin%20E%20(Tocopherol)&cc=MASTER" target="bibliowin">https://testdirectory.questdiagnostics.com/test/test-detail/931/vitamin-e-tocopherol?p=r&q=Vitamin%20E%20(Tocopherol)&cc=MASTER</a></li>
|
||
<li>University of Rochester Medical Center [Internet]. Rochester (NY): University of Rochester Medical Center; c2022. Health Encyclopedia: Vitamin E; [cited 2022 May 11]; [about 7 screens]. Available from: <a href="https://www.urmc.rochester.edu/encyclopedia/content.aspx?contenttypeid=19&contentid=vitamine" target="bibliowin">https://www.urmc.rochester.edu/encyclopedia/content.aspx?contenttypeid=19&contentid=vitamine</a></li>
|
||
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<li><a href="https://medlineplus.gov/lab-tests/vitamin-d-test/">Vitamin D Test</a></li>
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"description": "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, avocadoes, 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 high levels. 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. Other names: tocopherol test, alpha-tocopherol test, vitamin E, serum",
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