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
SGPG
Methodology

Semi-Quantitative Enzyme-Linked Immunosorbent Assay

Performed

Tues.

Reported

1-8 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

Plasma or urine. Contaminated, heat-inactivated, hemolyzed, icteric, or severely lipemic specimens.

Remarks
Stability

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.

Compliance Category

Laboratory Developed Test (LDT)

Note
Hotline History
N/A
CPT Codes

83516

Components
Component Test Code* Component Chart Name LOINC
0051284 SGPG Antibody, IgM 31666-1
* 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
  • SGPG Ab
  • SGPG Antibody
  • SGPG IgM
Sulfate-3-Glucuronyl Paragloboside (SGPG) Antibody, IgM