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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 protect cells from damage caused by free radicals.

Quick summary

["Vitamin E supports cell health and may help reduce oxidative stress in your body."]

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

Key facts at a glance

LOINC
6814-8
Short code
EBV EA IgG Ser Ql IF
Synonyms
EBV EA IgG Ser Ql 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
CPT
82784
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 nerve problems, muscle weakness, or vision issues. It may also be checked in people with certain medical conditions like cystic fibrosis, malabsorption disorders, or long-term use of certain medications that interfere with fat absorption.

What Does the Result Mean?

Results can vary based on your diet, health status, and other factors. Low levels might indicate deficiency, while higher levels could be due to supplements or certain health conditions. Your doctor will interpret the result in the context of your overall health.

Common Reasons for Testing

This test is often performed to diagnose or monitor Vitamin E deficiency, assess nutritional status, or evaluate conditions linked to oxidative stress or fat malabsorption.

Sample Collection and Preparation

A blood sample is typically drawn from a vein in your arm. You may be asked to fast for a few hours before the test, depending on your doctor’s instructions. The blood is then sent to a lab for analysis.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Vitamin E Level

Frequently asked questions

Vitamin E deficiency can lead to neurological issues, skin problems, or weakened immune function. High levels may suggest vitamin supplementation or underlying metabolic conditions. Your doctor will use the result to guide treatment or further testing if needed.
Vitamin E is essential for maintaining healthy skin, nerves, and immune function. Deficiency is rare but can occur with certain medical conditions or long-term dietary restrictions.
How long does it take to get results?
Results are usually available within 1 to 3 business days, depending on your lab’s processing time. Your doctor will contact you once they have the results.
Can I eat or drink before this test?
Follow your doctor’s instructions, but generally, you may have a light snack or drink water unless fasting is required. Avoid alcohol or certain medications that might affect 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