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Carotenoid Concentration in Serum

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

This test measures the amount of carotenoids, a group of natural pigments found in foods like fruits and vegetables, in your blood serum. Carotenoids play a role in protecting cells from damage and supporting vision health.

Quick summary

["Carotenoids in your blood can reflect dietary intake and overall health, especially related to vitamin A and antioxidant status."]

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

Key facts at a glance

LOINC
36793-8
Short code
Deprecated Carot ves MR.angio
Synonyms
Deprecated Carot ves MR.angio
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-angio
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 Carotenoid Concentration Testing Used For?

Doctors may order this test to assess dietary intake of carotenoids, evaluate vitamin A status, or investigate symptoms linked to low antioxidant levels, such as dry eyes or skin changes. It can also help monitor conditions affecting fat absorption or liver function.

How Is This Test Performed?

A blood sample is drawn from a vein, typically in your arm. The serum portion is separated and analyzed using a specialized laboratory method to measure carotenoid levels.

What Does a Low or High Carotenoid Level Mean?

Low levels might indicate poor dietary intake of carotenoid-rich foods, malabsorption issues, or certain liver or metabolic disorders. High levels could suggest overconsumption of carotenoid supplements or foods, though this is less common without medical intervention.

How Often Is This Test Done?

This test is not routinely performed as a screening test. It may be ordered occasionally for specific clinical reasons, such as evaluating nutritional status, diagnosing vitamin deficiencies, or assessing symptoms related to carotenoid metabolism.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Serum Carotenoid Level

Frequently asked questions

Why might my doctor request this test?
Your doctor may recommend this test if you have symptoms like dry eyes, skin changes, or a history of poor nutrient absorption. It can also help assess how well your body is utilizing carotenoids from your diet, particularly if you have conditions like cystic fibrosis or liver disease.
What are the normal ranges for carotenoids?
There are no universally standardized reference ranges for carotenoid levels in serum. Results are interpreted in the context of your clinical picture, diet, and overall health.
How long does it take to get results?
Results are typically available within 1 to 3 business days, depending on your laboratory’s processing time.
  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