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Alpha-Carotene, Serum — Mass Concentration

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

Measures the amount of alpha-carotene in your blood. This fat-soluble compound comes from food and is used to assess carotenoid intake or nutritional status.

Quick summary

["This blood test measures alpha-carotene, a dietary compound that may help assess nutrition and carotenoid intake."]

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

Key facts at a glance

LOINC
56669-5
Short code
A-Carotene Ser-mCnc
Synonyms
A-Carotene Ser-mCnc
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
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

What is this test?

This test measures the concentration of alpha-carotene in your blood. Alpha-carotene is a fat-soluble carotenoid found in green and yellow-orange vegetables, fruits, and some other foods.

Why might I need this test?

The test may be ordered to assess carotenoid intake or nutritional status. It may also be used in the evaluation of low levels associated with poor nutrition or difficulty absorbing dietary fats.

How is the test performed?

A blood sample is collected, usually from a vein, and sent to a laboratory for measurement. No special laboratory method is specified in the test request.

How do I prepare for the test?

Follow your clinician's instructions about eating and supplements before the test. Because recent dietary intake can affect the result, mention any carrot or other carotenoid supplements and any major change in your diet.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Alpha-Carotene

Frequently asked questions

Is alpha-carotene the same as beta-carotene?
No. Alpha-carotene and beta-carotene are different forms of carotenoids, although both come from the diet and can contribute to vitamin A production.
Do I need to fast before this test?
Fasting may be requested in some cases, but you should follow the specific instructions given by your clinician or laboratory.
Can supplements affect my result?
Yes. Carotenoid supplements and foods rich in carrots or other colorful vegetables can raise the blood level, so tell your clinician about recent supplement use and dietary changes.
  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