Vitamin E (Alpha-Tocopherol) Serum Concentration
This test measures the amount of vitamin E, a fat-soluble antioxidant, in your blood serum. Vitamin E helps protect cells from damage caused by free radicals.
["Vitamin E supports immune function and may help prevent certain health issues linked to oxidative stress."]
Key facts at a glance
- LOINC
- 63370-1
- Short code
- Gamma tocopherol SerPl-mCnc
- Synonyms
- Gamma tocopherol SerPl-mCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 5
- Ref high
- 20
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why Is This Test Done?
Your healthcare provider may order this test if you have symptoms of vitamin E deficiency, such as muscle weakness, nerve problems, or vision issues. It may also be checked in people with certain genetic disorders, malabsorption problems (like celiac disease or Crohn’s), or those taking certain medications that can affect vitamin E levels.
What to Expect Before the Test
No special preparation is usually needed. You may be asked to fast for 8–12 hours before the test if your lab requires it, but always follow your provider’s instructions. Bring any medications you’re taking to your appointment.
How the Test Is Done
A blood sample is drawn from a vein in your arm by a healthcare professional. The blood is processed to separate serum, which is then tested for vitamin E levels using a specialized laboratory method.
What the Results Mean
Results are compared to a reference range, but exact values can vary by lab. Low levels may indicate deficiency, while high levels could suggest certain conditions or medications. Your provider will discuss your results in the context of your overall health.
Reference range
NCBI: Vitamin E 5-20 µg/mLN/A
No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Vitamin E deficiency is rare but can lead to neurological issues, muscle problems, or weakened immune function. It’s often linked to conditions that impair fat absorption (like pancreatitis or cystic fibrosis) or long-term use of certain medications. Early detection helps manage symptoms and prevent complications.
Short name
Vitamin E Level
Frequently asked questions
What causes low vitamin E levels?
How long does it take to get results?
Can I eat or drink anything before the test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 17, 2026. · Read our editorial policy