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HelpCatalog ID MAG Myelin Associated Glycoprotein (MAG) Antibody, IgM
Additional Codes
CPOE: Ref Myelin Associated Glycoprotein (MAG) Antibody, IgM
DOE: Ref MAG Ab
Specimen
Gold SST tube, collect 2.0 mL blood
Centrifuge specimen within 2 hours of collection
Serum, 1.0 mL (0.2 mL minimum), refrigerated
Rejection Criteria
Urine, CSF, plasma, contaminated specimen, heat-inactivated specimen, hemolyzed specimen, severely lipemic specimen, specimen at room temperature >48 hours, insufficient quantity, unlabelled specimen
Interpretative Information
An elevated IgM antibody concentration greater than 999 TU against myelin-associated glycoprotein (MAG) suggests active demyelination in peripheral neuropathy. A normal concentration (less than 999 TU) generally rules out an anti-MAG antibody-associated peripheral neuropathy.
TU=Titer Units
Performing Lab
ARUP Laboratories
Turn-Around-Time
1-4 days
Reference Values
< 1000 TU