{"id":"vitamin-e","name":"Vitamin E (Alpha-Tocopherol)","shortName":"Vitamin E","aliases":["Alpha-Tocopherol","Vitamin E","Tocopherol, Alpha","Vitamin E, Alpha","Vitamin E (Alpha Tocopherol), Serum","Vitamin E (Alpha-Tocopherol)","Vitamin E, Serum","Vitamin E, S","A-Tocopherol, Vitamin E","Alpha Tocopherol"],"abbreviations":["Vit E","a-tocopherol"],"loinc":[{"code":"1823-4","primary":true},{"code":"14590-4","primary":false}],"specimen":"serum-or-plasma","units":[{"ucum":"mg/L","display":"mg/L"},{"ucum":"umol/L","display":"µmol/L"},{"ucum":"mg/dL","display":"mg/dL"},{"ucum":"ug/dL","display":"µg/dL"}],"referenceRanges":[{"population":"18+","low":5.5,"high":17,"unit":"mg/L","unitDisplay":"mg/L","note":"Mayo Clinic Laboratories, adults 18 and older, LC-MS/MS. ARUP prints 5.5-18.0 mg/L for ages 13 and older. Vitamin E travels with blood fats, so in adults with fat malabsorption a ratio of alpha-tocopherol to total lipid below 0.8 mg/g is considered the most accurate sign of deficiency (European Consensus on Malabsorption, 2025). Quest prints 5.7-19.9 mg/L for adults, so the upper limit differs by about 3 mg/L between labs; Labcorp was not opened. Use the interval printed on your own report.","sources":[{"title":"Vitamin E, Serum - Test ID VITE (Mayo Clinic Laboratories Extended Catalog)","url":"https://www.testcatalog.org/show/VITE","publisher":"Mayo Clinic Laboratories"},{"title":"Vitamin E, Serum or Plasma (test 0080521)","url":"https://ltd.aruplab.com/Tests/Pub/0080521","publisher":"ARUP Laboratories"},{"title":"Micronutrient, Vitamin E (Quest Diagnostics test, adult intervals as listed by Fullscript)","url":"https://us.fullscript.com/labs/quest/micronutrient-vitamin-e","publisher":"Fullscript (listing Quest Diagnostics test data)"},{"title":"European Consensus on Malabsorption - UEG & SIGE, LGA, SPG, SRGH, CGS, ESPCG, EAGEN, ESPEN, and ESPGHAN: Part 2: Screening, Special Populations, Nutritional Goals, Supportive Care, Primary Care Perspective","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC12188380/","publisher":"United European Gastroenterology Journal","year":2025}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Measures alpha-tocopherol, the main form of vitamin E in blood, to check whether you have enough of this fat-soluble vitamin.","url":"https://bloodtesttracker.com/markers/vitamin-e","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}