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HelpTest Code GQ1ES Ganglioside GQ1b Antibody, IgG, ELISA, Serum
Additional Codes
| Epic Ordering Code | LAB3040508 |
| NBS code | LBC02302 |
| Service code | 36661 |
Reporting Name
GQ1b-IgG ELISA, SSpecimen Type
SerumNecessary Information
Provide the following information:
1. Relevant clinical information
2. Ordering provider name, phone number, mailing address, and email address
Specimen Required
Patient Preparation: For optimal antibody detection, specimen collection is recommended to occur prior to initiation of immunosuppressant medication or intravenous immunoglobulin treatment.
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
NUH Outreach Laboratories:
Specimen Requirements
Submit only one of the following:
Preferred: Red Top
Acceptable: Yellow Top
Processing Requirements
Centrifuge and aliquot serum into a Mayo plastic tube.
Specimen type: Serum
Volume: 1.1 mL
Storage/transport requirements: Refrigerated
Forms
If not ordering electronically, complete, print, and send a Neurology Specialty Testing Client Test Request (T732) with the specimen.
Special Instructions
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 28 days |
| Frozen | 28 days | |
| Ambient | 72 hours |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | Reject |
Method Name
Enzyme-Linked Immunosorbent Assay (ELISA)
Day(s) Performed
Monday, Wednesday, Friday
Report Available
5 to 8 daysPlease note that this is a referral test requiring transport to the external testing facility and an additional 3-5 days is required.
Reference Values
Negative
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Evaluating patients with an underlying demyelinating neuropathy
Supporting the diagnosis of a ganglioside GQ1b IgG-related disorder
CPT Code Information
83516
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| GQ1ES | GQ1b-IgG ELISA, S | 63254-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 621107 | GQ1b-IgG ELISA, S | 63254-7 |
Secondary ID
621107Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.Last updated 29/07/2026