Glutamic Acid Decarboxylase Antibody, CSF
| Sunquest Code: | GAD65C | ||
| Epic Code: | LAB5839 | Epic Name: | Glutamic Acid Decarboxylase, CSF |
| Synonyms: | GAD65; 65K Antibody; Beta Cell Antibody | ||
| Methodology: | Immunoprecipitation assay | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Fri; results are reported within 2-6 days. | ||
| Compliance: | This test was developed and its performance characteristics determined by Laboratory Medicine and Pathology, Mayo Clinic. This test has not been cleared by the U.S. Food and Drug Administration. |
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Collection Instructions
| Specimen: | CSF |
| Optimal Volume: | 1.5 mL |
| Minimum\Peds Volume: | 1 mL |
| Container: | Sterile tube (Plastic leakproof container, sterile) |
| Causes for Rejection: | Gross hemolysis, lipemia or icterus |
Processing and Shipping
| Specimen Processing: | Centrifuge if RBC present. Aliquot 1 mL into standard transport tube. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | 72 hours at room temperature; 28 days refrigerated or frozen. |
| Test Performed at or Referral Lab | Lab Sendouts (Mayo) |
| Referral Lab number: | GD65C |
Interpretive
| Reference Range: | 0.02 nmol/L or less |
| Use: | Possible use in evaluating patients with stiff-man syndrome, autoimmune cerebellitis and other acquired central nervous system disorders affecting gabaminergic neurotransmission. |
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