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Ganglioside GM-1 Antibodies (IgG, IgM), EIA
Test Code37093
CPT Codes
83520 (x2)
Includes
Ganglioside Antibody IgG and IgM
Preferred Specimen
1 mL serum
Patient Preparation
Overnight fasting is preferred
Minimum Volume
0.2 mL
Transport Container
Plastic screw-cap vial
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 48 hours
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Mon, Wed night; Report available: 9 days
Reference Range
GM-1 Antibody (IgG) | <1:800 titer |
GM-1 Antibody (IgM) | <1:800 titer |
IgG, IgM Antibodies to Ganglioside GM1
Normal | <1:800 |
Moderately elevated | 1:800-1:3200 |
Highly elevated | ≥1:6400 |
Clinical Significance
Ganglioside GM-1 Antibody IgG is associated with the Guillain-Barre syndrome, particularly the acute motor axonal neuropathy variant. Antibody IgM is associated with chronic multifocal motor neuropathy.
Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
33608 Ortega Highway |
San Juan Capistrano, CA 92675-2042 |