Myelin Associated Glycoprotein (MAG) Antibody, IgM
0051285
 
Ordering Recommendation
Mnemonic
MAGM ELISA
Methodology
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Tue, Thu, Sat
Reported
1-4 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Serum separator tube.  
Specimen Preparation
Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.1 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Urine. Contaminated, heat inactivated, hemolyzed, severely lipemic specimens.  
Remarks
 
Stability
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year  
Reference Interval
Less than 1000 TU
Interpretive Data
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

See Compliance Statement D: www.aruplab.com/CS
Note
CPT Code(s)
83516
Components
Component Test Code*Component Chart Name
0051285MAG Antibody, IgM Elisa
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • MAG Ab
  • MAG Antibody
  • MAG Antibody by ELISA
  • MAG IgM