Sign In
Regional Medical Lab
Test Directory


Myelin-Associated Glycoprotein (MAG-SGPG) Antibody IgM

Order Name SGPG AB
Test Number: 3660850
Revision Date 05/11/2022
Test Name Methodology LOINC Code
Myelin-Associated Glycoprotein (MAG-SGPG) Antibody IgM
Semi-Quantitative Enzyme-Linked Immunosorbent Assay 31666-1 
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.1 mL) Serum Clot Activator SST Refrigerated
Instructions Separate serum from cells ASAP or within 2 hours of collection.
Unacceptable Conditions: Plasma or urine. Contaminated, heat-inactivated, hemolyzed, icteric, or severely lipemic specimens.
Stability: After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year
Testing Schedule Tue 
Expected TAT 2-9 Days  
Clinical Use AKA: Sulfate-3-Glucuronyl Paragloboside (SGPG) Antibody, IgM
The majority of SGPG IgM positive sera will show reactivity against MAG. Patients that are SGPG IgM positive and MAG IgM negative may have multi-focal motor neuropathy with conduction block. 
Notes Reference Lab: ARUP
Test Code: code 51284
Click Here to view information on the ARUP website.
CPT Code(s) 83516
Lab Section Reference Lab