Laboratory Services
Glutamic Acid Decarboxylase (GAD65) Antibody Assay, Serum
Print this pageUpdated Test Information:
| Test Description |
Glutamic Acid Decarboxylase (GAD65) Antibody Assay, Serum
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|
|---|---|---|
| Synonym(s) |
64K Antibody, Anti-GAD Antibodies, Anti-Glutamic Acid Decarboxylase Ab, Beta Cell Antibody, GAD65 Antibody Assay, Glutamate Decarboxylase Antibodies (GAD65), Islet cell antibody, Pancreatic Islet Cell Ab, Stiffman Syndrome, Stiff person, Ataxia |
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| Test ID |
GD65S
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|
| General Information |
Assessing susceptibility to autoimmune (type 1, insulin-dependent) diabetes mellitus and related endocrine disorders (eg, thyroiditis and pernicious anemia) Distinguishing between patients with type 1 and type 2 diabetes Confirming a diagnosis of stiff-man syndrome, autoimmune encephalitis, autoimmune ataxia, brain stem encephalitis, autoimmune epilepsy, autoimmune myelopathy |
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| Container Type |
Red Top |
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| Specimen Type |
Serum |
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| Specimen Requirements |
1.5 mL |
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| Alternate Specimen Type |
SST |
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| Specimen Collection / Processing Instructions |
Centrifuge and aliquot into a plastic vial |
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| Minimum Sample Volume |
1 mL |
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| Stability |
Refrigerated (preferred) 28 days |
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| Unacceptable Specimen Conditions |
Gross hemolysis, Gross Lipemia, Gross icterus |
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| Methodology |
Radioimmunoassay (RIA) |
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| Estimated TAT |
3 to 6 days |
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| Testing Schedule |
Monday through Sunday |
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| Retention |
28 days |
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| CPT Code(s) |
86341 |
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| Reference Range |
< or =0.02 nmol/L Reference values apply to all ages. |
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| STAT Orderable (Y/N) |
no |
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| Performing Lab |
Mayo |
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| LOINC Code(s) |
30347-9 |
