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Test Name

GAD65 Neurological Syndrome Antibody Test

To view specimen requirements and codes please Select a regional laboratory.

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CPT Code(s)**

86341
**IMPORTANT: CPT Code is informational only; obtain the Test Code for ordering.

Methodology

Enzyme Linked Immunosorbent Immunoassay (ELISA)

Reference Range(s)

Technical Results

Negative <1:600
Borderline 1:600-1:1200
Positive >1:1200

Clinical Significance

Anti-GAD65 antibody is found in patients with Stiff-Person syndrome, subacute cerebellar ataxia, or encephalitis.

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

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.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.

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GAD65 Neurological Syndrome Antibody Test
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