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Dodecanoyl carnitine (Carnitine-bound fatty acid metabolite)

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

This test measures a specific fatty acid linked to carnitine, a compound that helps transport fatty acids into cells for energy production. It may be checked if you have symptoms of metabolic disorders or genetic conditions affecting fat metabolism.

Quick summary

["This test helps diagnose conditions related to how your body breaks down fats."]

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

Key facts at a glance

LOINC
53058-4
Short code
Dodecanoylcarn Amn-sCnc
Synonyms
Dodecanoylcarn Amn-sCnc
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may order this test if you have signs of metabolic disorders, such as unexplained muscle weakness, fatigue, or unusual smells on your breath. It could also be part of a broader evaluation for genetic conditions like medium-chain acyl-CoA dehydrogenase (MCAD) deficiency or other carnitine-related disorders.

What to Expect Before the Test

No special preparation is typically needed, but you may be asked to fast for a few hours before drawing blood. If you’re taking medications that affect fat metabolism, let your provider know.

Sample Collection and Processing

A blood sample is collected from a vein in your arm. The sample is sent to a lab for analysis using a specialized method to measure dodecanoyl carnitine levels.

What the Results Mean

Results are compared to reference ranges for healthy individuals. Elevated levels might suggest an issue with fat metabolism, while lower levels could indicate a deficiency or genetic disorder.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Dodecanoyl carnitine

Frequently asked questions

What could high dodecanoyl carnitine levels indicate?
High levels may point to conditions like medium-chain acyl-CoA dehydrogenase (MCAD) deficiency or other inherited metabolic disorders that disrupt fat breakdown. These conditions can cause symptoms like muscle weakness, seizures, or liver problems.
What could low dodecanoyl carnitine levels indicate?
Low levels might suggest a deficiency in carnitine or other metabolic imbalances. However, this can also be influenced by diet, medications, or other underlying health conditions.
How often should this test be repeated?
If your results are abnormal, your healthcare provider may recommend repeating the test or additional tests to better understand the cause. Follow-up may include genetic testing or monitoring symptoms closely.
  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