Ordering Recommendation

May be useful when assessing for primarily motor neuron disease and motor neuropathies. Test by itself is not diagnostic and should be used in conjunction with other clinical parameters to confirm disease.

Mnemonic

GM1 PAN

Methodology

Semi-Quantitative Enzyme-Linked Immunosorbent Assay

Performed

Mon, Wed, Fri

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 0.3 mL serum to an ARUP Standard Transport Tube. (Min: 0.1 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Room temperature specimens. Plasma, CSF, or other body fluids. Contaminated, heat-inactivated, hemolyzed, icteric, or severely lipemic specimens.

Remarks
Stability

After separation from cells: Ambient: Unacceptable; Refrigerated: 2 weeks; Frozen: 1 year

Reference Interval

Test Number
Components
Reference Interval
GM1 Antibody IgG 29 IV or less: Negative
30-50 IV: Equivocal
51-100 IV: Positive
101 IV or greater: Strong Positive
GM1 Antibody, IgM 29 IV or less: Negative
30-50 IV: Equivocal
51-100 IV: Positive
101 IV or greater: Strong Positive

Interpretive Data

Ganglioside antibodies are associated with diverse peripheral neuropathies. Elevated antibody levels to ganglioside-monosialic acid (GM1) are associated with motor or sensorimotor neuropathies, particularly multifocal motor neuropathy. Anti-GM1 may occur as IgM (polyclonal or monoclonal) or IgG antibodies. These antibodies may also be found in patients with diverse connective tissue diseases as well as normal individuals. These tests by themselves are not diagnostic and should be used in conjunction with other clinical parameters to confirm disease.

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Compliance Category

Laboratory Developed Test (LDT)

Note

Hotline History

N/A

CPT Codes

83516 x2

Components

Component Test Code* Component Chart Name LOINC
0050582 GM1 Antibody, IgG 51729-2
0050584 GM1 Antibody, IgM 51703-7
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • Anti-GM Antibodies
  • Anti-GM1 Antibody Panel
  • Ganglioside Antibodies
  • Ganglioside (GM1) Antibodies, IgG and IgM
  • Ganglioside Abs IgG and IgM
  • Ganglioside-Monosialic Acid Ab
  • GM1 IgG IgM
Ganglioside (GM1) Antibodies, IgG and IgM