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GAD65, IA-2, and Insulin Autoantibody
Test Code10584
CPT Codes
86337, 86341 (x2)
Includes
Glutamic Acid Decarboxylase-65 Antibody
IA-2 Antibody
Insulin Autoantibody
IA-2 Antibody
Insulin Autoantibody
Preferred Specimen
2 mL serum
Minimum Volume
0.4 mL
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 30 days
Refrigerated: 7 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic
Methodology
Enzyme Linked Immunosorbent Assay (ELISA) • Radiobinding Assay (RBA)
Setup Schedule
See individual assays
Limitations
GAD-65 antibodies are detected in 20% of diabetic twins who remain disease-free for long periods of time and in 8% of healthy individuals.