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Carnitine in cerebrospinal fluid (mass concentration)

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). It may be used to evaluate metabolic or neurological conditions.

Quick summary

["Carnitine levels in CSF can help diagnose or monitor certain metabolic disorders."]

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

Key facts at a glance

LOINC
54477-5
Short code
Dicarboxypalmitoylcarn CSF-sCnc
Synonyms
Dicarboxypalmitoylcarn 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 muscle weakness, neurological issues, or signs of metabolic disorders. It could also be part of a broader evaluation for conditions affecting fat metabolism or nerve function.

What to Expect Before the Test

No special preparation is typically needed. The test involves a simple lumbar puncture (spinal tap) where a small amount of CSF is collected. You may experience mild discomfort, but it usually resolves quickly.

What the Results Mean

Results help assess whether carnitine levels are abnormal, which could indicate underlying metabolic issues. Abnormal findings may prompt further testing or treatment adjustments.

Common Conditions Monitored

This test may be used to diagnose or monitor conditions like carnitine deficiency, organic acidemias, or other metabolic disorders affecting energy production in cells.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical significance: Abnormal carnitine levels in CSF can signal metabolic disorders that may require immediate medical attention. Elevated or low levels may guide treatment plans for conditions like mitochondrial disorders or inherited metabolic diseases.

Short name

Carnitine CSF

Frequently asked questions

What causes abnormal carnitine levels in CSF?
Abnormal carnitine levels in CSF can result from genetic disorders, certain metabolic syndromes, or conditions affecting nerve or muscle function. Your doctor may also consider medications or underlying health conditions that could influence results.
How often is this test repeated?
The frequency depends on your symptoms and diagnosis. Your healthcare provider will determine if follow-up tests are needed, often based on how your condition progresses or responds to treatment.
Does this test involve radiation?
No, this test does not involve radiation. It is a simple fluid collection procedure using sterile techniques.
  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