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CSF myelin basic protein
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CSF myelin basic protein

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CSF myelin basic protein is a test to measure the level of myelin basic protein (MBP) in the cerebrospinal fluid (CSF). The CSF is the clear liquid that surrounds the brain and spinal cord.

MBP is found in the material that covers many of your nerves.

A sample of spinal fluid is needed. This is done using a lumbar puncture.

I Would Like to Learn About:

  • How the Test is Performed

    A sample of spinal fluid is needed. This is done using a lumbar puncture.

  • Why the Test is Performed

    This test is done to see if myelin is breaking down. Multiple sclerosis is the most common cause for this, but other causes may include:

    • Bleeding of the central nervous system
    • Central nervous system trauma
    • Certain brain diseases (encephalopathies)
    • Infection of the central nervous system
    • Stroke
  • Normal Results

    In general there should be less than 4 ng/mL of myelin basic protein in the CSF.

    Note: ng/mL = nanogram per milliliter

    Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.

    The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.

  • What Abnormal Results Mean

    Myelin basic protein levels between 4 and 8 ng/mL may be a sign of a chronic breakdown of myelin. It may also indicate recovery from an acute episode of myelin breakdown.

    If the myelin basic protein level is greater than 9 ng/mL, myelin is actively breaking down.

Related Information

  MyelinMultiple sclerosis...StrokeSpinal cord trauma...ChronicAcute     Multiple sclerosis...Stroke

References

Houtchens MK, Lublin FD, Miller AE, et al. Multiple sclerosis and other inflammatory demyelinating diseases of the central nervous system. In: Daroff RB, Fenichel GM, Jankovic J, Mazziotta JC, eds. Bradley’s Neurology in Clinical Practice. 6th ed. Philadelphia, Pa: Saunders Elsevier; 2012:chap 54.

Greene, DN, Schmidt, RL, Wilson, AR, et al. Cerebrospinal Fluid Myelin Basic Protein Is Frequently Ordered but Has Little Value. Am J Clin Pathol. 2012:138:262-272

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Review Date: 5/28/2013  

Reviewed By: Luc Jasmin, MD, PhD, FRCS (C), FACS, Department of Neurosurgery at Cedars-Sinai Medical Center, Los Angeles CA; Department of Surgery at Los Robles Hospital, Thousand Oaks CA; Department of Surgery at Ashland Community Hospital, Ashland OR; Department of Surgery at Cheyenne Regional Medical Center, Cheyenne WY; Department of Anatomy at UCSF, San Francisco CA. Review provided by VeriMed Healthcare Network.

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