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Serum or plasma concentration of vitamin E (alpha-tocopherol)

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of vitamin E, a fat-soluble antioxidant found in your blood. It helps assess your body’s vitamin E status and potential deficiencies.

Quick summary

["Vitamin E supports cell health and immune function; low levels may indicate nutritional needs or absorption issues."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
14083-0
Short code
EBV EA Ab Titr Ser IF
Synonyms
EBV EA Ab Titr Ser IF
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
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 changes. It may also be used to monitor vitamin E levels in people with certain medical conditions, like cystic fibrosis or malabsorption disorders, or those taking supplements.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the blood draw if your lab requires it. Wear comfortable clothing and plan for the test to take place at a clinic or hospital.

During the Test

A healthcare professional will insert a small needle into a vein in your arm to draw blood. You may feel a brief pinch, but it’s usually over quickly. The blood sample will be sent to a lab for analysis.

After the Test

You can return to your normal activities immediately. Apply gentle pressure to the site to stop any bleeding, and check the area for swelling or redness. Report any severe pain or signs of infection (e.g., fever) to your provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Low vitamin E levels may signal deficiencies, which can affect nerve function, skin health, or immune response. High levels could indicate over-supplementation or certain liver or gallbladder conditions. Results help guide dietary or supplement adjustments if needed.

Short name

Vitamin E Level

Frequently asked questions

What causes vitamin E levels to be low?
Vitamin E deficiency is rare but can result from poor diet (e.g., limited vegetable oils), malabsorption disorders (like celiac disease or Crohn’s), or conditions affecting fat absorption. Rare genetic disorders may also contribute.
How long does it take to get results?
Results typically arrive within 1–3 business days, depending on your lab’s processing time. Your provider will discuss them with you during a follow-up visit.
Can I take vitamin E supplements before the test?
If your provider directed supplementation, follow their instructions. Otherwise, avoid taking vitamin E supplements for at least 24 hours before testing to ensure accurate results.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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 16, 2026. · Read our editorial policy