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Vitamin E (alpha-tocopherol) in serum/plasma

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

This test measures the level of vitamin E, a fat-soluble antioxidant that helps protect cells from damage.

Quick summary

["Vitamin E supports immune function, skin health, and may reduce oxidative stress in the body."]

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

Key facts at a glance

LOINC
106749-5
Short code
LV ES vol MR
Synonyms
LV ES vol MR
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
mr
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 to check for vitamin E deficiency, especially if you have symptoms like muscle weakness, nerve problems, or frequent infections. It can also help monitor conditions like cystic fibrosis, where vitamin E levels may be lower due to fat malabsorption.

What to Expect Before the Test

No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw a blood sample. If you’re on blood thinners, let your provider know before the test.

What the Results Mean

Results are compared to a general reference range for healthy adults. Low levels may indicate deficiency, while very high levels could suggest certain medications or liver issues. Your provider will interpret results in the context of your overall health.

Common Conditions Linked to Vitamin E Levels

Low vitamin E levels can be linked to conditions like chronic liver disease, malabsorption syndromes (e.g., celiac disease), or certain genetic disorders. High levels may rarely be associated with liver disease or certain medications.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Serum Alpha-Tocopherol

Frequently asked questions

What causes vitamin E deficiency?
Deficiency is most commonly linked to conditions that interfere with fat absorption (e.g., cystic fibrosis, Crohn’s disease) or liver problems. Rarely, it can result from poor diet or certain medications that reduce absorption.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on your lab’s processing time. Your healthcare provider will contact you once they have the findings.
Can I take supplements to raise my vitamin E levels?
Supplements may help if your deficiency is mild, but they should be used under medical supervision. Your provider will guide you on the right dose and monitor your levels to avoid excess.
  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