GAD65 Neurological Syndrome Antibody Test

Test Code
422

Test Details


Test code:422
Type of disorder:Paraneoplastic and Other Antibody Disorders of the CNS
Disease(s) tested for:Paraneoplastic Neurological Syndrome, Stiff Person Syndrome
Profiles that contain this test:NeoCerebellar Degeneration Paraneoplastic Profile with Recombx®
NeoComplete Paraneoplastic Evaluation with Recombx®
NeoEncephalitis Paraneoplastic Evaluation with Recombx®

Technical Information


Clinical Significance:Anti-GAD65 antibody is found in patients with Stiff-Person syndrome, subacute cerebellar ataxia, or encephalitis.
Methodology: ELISA
Reference Range:Negative <1:600

CPT Coding


The CPT codes provided 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 payer being billed.

CPT:86341

Specimen Requirements


Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the requisition form.

Specimen Type:Serum
Specimen Stability: Room temperature: 72 hours, Refrigerated: 28 days, Frozen: 4 months,
Specimen Requirements: 2 mL (0.5 mL minimum) serum in a Red-top tube or Serum Separator Tube (SST)
Instructions:Serum must be separated from whole blood within 48 hours of collection.

Shipping Considerations


Transport Temperature:Refrigerated
Set-up/Analytic Time:7-10 days

Additional Resources

Letters of Medical Necessity

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