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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. Vitamin E helps protect cells from damage caused by free radicals.

Quick summary

["Vitamin E supports cell health and immune function; low levels may indicate nutritional deficiencies or health concerns."]

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

Key facts at a glance

LOINC
97993-0
Short code
EBV EA IgM Titr Ser IF
Synonyms
EBV EA IgM 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
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 like muscle weakness, nerve problems, or if you have conditions that affect fat absorption (such as celiac disease or Crohn’s disease). It can also be part of a general health check or if you’re taking certain medications that might lower vitamin E levels.

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 test if it involves drawing blood. If you’re taking vitamin E supplements, let your provider know.

What Happens During the Test?

A healthcare professional will draw blood from a vein in your arm. You may feel a small pinch, but it usually doesn’t cause discomfort. The blood sample is then sent to a lab for analysis.

What Are Possible Results?

Results are reported as a concentration in milligrams per deciliter (mg/dL) or micrograms per milliliter (µg/mL). Your results will be compared to standard reference ranges provided by your lab.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Vitamin E Level

Frequently asked questions

What does a low vitamin E level mean?
A low vitamin E level may indicate a deficiency, which can lead to muscle weakness, nerve damage, or an increased risk of oxidative stress-related diseases. Your provider will discuss next steps based on your overall health and symptoms.
How long does it take to get results?
Test results are typically available within 1–3 business days, depending on your lab’s processing time. Your healthcare provider will contact you once results are ready.
Can I take vitamin E supplements if my levels are low?
Only your healthcare provider can advise on supplement use. They’ll consider your current levels, overall health, and any medications you’re taking to avoid potential risks or interactions.
  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