Test/Investigation
Myelin Associated Glycoprotein
Site(s) or Laboratory offering Test/Investigation
Referral laboratory
Also Known as/Frequency of Test
MAG, Anti-MAG
Indications
Myelin Associated Glycoprotein (MAG) autoantibodies are associated with peripheral neuropathy and IgM paraproteinaemia. Antibodies may respond favourably to therapeutic intervention. Testing for the presence of these autoantibodies is useful for diagnosis as well as monitoring of therapy
Comments/Precautions
Referred outside of EPA.
Sample type
Serum
Turnaround times (TAT) Urgent/Routine/GP or OPD
4 weeks
Reference intervals (adult unless stated)
< 1,000 BTU No detection of anti-MAG IgM antibody
1,000 - 2,000 BTU Weak insignificant result
2,001 - 4,000 BTU Doubtful result to be interpreted with clinical and biological feature (monoclonal IgM?); to be checked later
4,001 - 10,000 BTU Moderate Anti-MAG result
> 10,000 BTU Significant anti-MAG result