Ordering Recommendation
Non-panel testing for autoimmune neuropathies. Test by itself is not diagnostic and should be used in conjunction with other clinical parameters to confirm disease.
Mnemonic
Methodology
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Tue
Reported
1-8 days
New York DOH Approval Status
Specimen Required
Serum separator tube.
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)
Refrigerated.
Plasma or urine. Contaminated, heat-inactivated, hemolyzed, icteric, or severely lipemic specimens.
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year
Reference Interval
Less than 1.00 IV
Interpretive Data
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.
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.
Laboratory Developed Test (LDT)
Note
Hotline History
CPT Codes
83516
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0051284 | SGPG Antibody, IgM | 31666-1 |
Aliases
- SGPG Ab
- SGPG Antibody
- SGPG IgM