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 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 to 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.
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 PMID: 22904139 www.ncbi.nlm.nih.gov/pubmed/22904139.
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: Elsevier Saunders; 2012:chap 54.
Daniel Kantor, MD, Kantor Neurology, Coconut Creek, FL and Immediate Past President of the Florida Society of Neurology (FSN). Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.