Sensory Neuropathy Antibody Panel (Ganglioside) : 90124

Test Code
SNAB or 90124

Alias/See Also
Ganglioside Antibody

CPT Codes
83520x3

Includes
Ganglioside GD1b Antibody (IgG), EIA; Ganglioside GD1b Antibody (IgM), EIA; Ganglioside GQ1b Antibody (IgG), EIA

Instructions
Overnight fasting is preferred.

Serum separator tube.

Transport Container
Centrifuge  serum separator tube and transport refrigerated, 1 mL (Min: 0.6 mL).

Transport Temperature
Refrigerated.

Specimen Stability
Room temperature: 48 hours; Refrigerated: 7 days; Frozen: 21 days

Methodology
Immunoassay (IA)

Setup Schedule
Monday & Wednesday

Report Available
3-8 days  (From receipt at performing laboratory)

Reference Range
GD1b Ab (IgG) <1:100 Titer
GD1b Ab (IgM) ≤1:800 Titer
GQ1b Ab (IgG) <1:100 Titer

Clinical Significance
Gangliosides GD1b IgG is associated with acute motor and sensory axonal neuropathy with associated cerebellar ataxia and ataxic presentations of Guillain-Barré Syndrome. GQ1b IgG may be associated with Miller-Fisher Syndrome. GQ1b IgM antibody is associated with chronic sensory ataxic neuropathy.

Performing Laboratory
Quest Diagnostics



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.