Skip to content

Carnitine in Cerebrospinal Fluid (Carnitine CSF)

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

This test measures the amount of carnitine, a fat-metabolizing substance, in your cerebrospinal fluid (the fluid surrounding your brain and spinal cord). Low levels may signal metabolic or neurological concerns.

Quick summary

["Carnitine in CSF helps assess metabolic disorders or neurological conditions affecting fat metabolism."]

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

Key facts at a glance

LOINC
53079-0
Short code
Dodecenoylcarn CSF-sCnc
Synonyms
Dodecenoylcarn CSF-sCnc
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

Why Might This Test Be Ordered?

Your healthcare provider may recommend this test if you have symptoms like weakness, numbness, or neurological issues that could be linked to carnitine deficiency. It may also be used in diagnosing conditions like organic acidemias, mitochondrial disorders, or other metabolic diseases affecting the brain.

What Does the Result Mean?

Results are not typically provided as a single reference range since carnitine levels in CSF can vary based on underlying conditions. Your doctor will interpret the result in the context of your symptoms and other tests.

How Is This Test Performed?

A small sample of cerebrospinal fluid is collected through a procedure called a lumbar puncture (spinal tap). The fluid is then sent to the lab for analysis to measure carnitine levels.

What Are Possible Causes of Abnormal Results?

Low carnitine in CSF may be associated with inherited metabolic disorders, mitochondrial dysfunction, or conditions affecting fat metabolism. High levels could indicate certain metabolic or neurological conditions, though this is less common.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Carnitine in CSF plays a role in diagnosing rare but serious metabolic disorders that can impact brain function. Early detection can help guide treatment and management strategies.

Short name

Carnitine Level in CSF

Frequently asked questions

Why was I asked to have this test?
Your doctor may have suspected a metabolic or neurological condition affecting how your body processes fats or energy. This test helps evaluate whether carnitine levels in your spinal fluid are abnormal and may need further investigation.
What does a low carnitine level in CSF mean?
A low level may suggest a metabolic disorder, such as a deficiency in enzymes needed for fat metabolism or mitochondrial dysfunction. Your doctor will discuss further steps based on your symptoms and test results.
Is this test painful?
The lumbar puncture procedure may cause mild discomfort, but it is generally well-tolerated. You may feel a slight pinch during the needle insertion, but most people recover quickly afterward.
  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