CSF myelin basic protein

Definition

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.

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:

Normal Results

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

Normal value ranges may vary slightly among different laboratories. Talk to your health care provider about the meaning of your specific test results.

The example above shows the common measurement result for this test. 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 long-term (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.


Review Date: 5/15/2017
Reviewed By: Amit M. Shelat, DO, FACP, Attending Neurologist and Assistant Professor of Clinical Neurology, SUNY Stony Brook, School of Medicine, Stony Brook, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

This information should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. © 1997- 2007 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.