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Myelin Basic Protein in Cerebrospinal Fluid (CSF)

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

This test measures the amount of myelin basic protein in your cerebrospinal fluid (the fluid surrounding your brain and spinal cord). It helps assess potential damage to the myelin sheath, which protects nerve fibers.

Quick summary

["This test may help diagnose or monitor conditions affecting nerve fibers in the central nervous system."]

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

Key facts at a glance

LOINC
63287-7
Short code
Myelin Ab CSF Ql IF
Synonyms
Myelin Ab CSF Ql IF
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your healthcare provider may order this test if you have symptoms like numbness, weakness, or balance issues that could suggest nerve damage. It’s often used in cases of suspected multiple sclerosis, nerve injuries, or other neurological conditions affecting myelin.

What to Expect Before the Test

No special preparation is needed. The test involves a simple lumbar puncture (spinal tap) where a small amount of CSF is collected from your lower back. You may feel mild pressure or discomfort, but it’s usually brief.

What the Results Mean

Elevated levels of myelin basic protein in CSF can indicate damage to myelin sheaths in the central nervous system. However, results alone aren’t diagnostic—they’re often interpreted alongside symptoms and other tests.

Common Conditions Monitored

This test is particularly useful for diagnosing or monitoring conditions like multiple sclerosis, transverse myelitis, or other demyelinating diseases where nerve insulation is compromised.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Myelin Basic Protein (CSF)

Frequently asked questions

What causes myelin basic protein to rise in CSF?
Myelin basic protein levels can increase due to direct nerve damage (e.g., from trauma, inflammation, or diseases like multiple sclerosis). Stress, infections, or certain medications may also temporarily affect results.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Your provider will discuss them with you during follow-up.
Can I drink water before this test?
Yes, you can drink water as usual unless instructed otherwise by your provider. Avoid caffeine or alcohol before the procedure to minimize discomfort.
  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