Glutamic Acid Decarboxylase Autoantibodies (GADA)

Methodology: 
Radioimmunoassay
Performed: 
Weekly
Reported: 
1 - 3 days
Use: 
  • Diagnosis of Type 1 Diabetes: The presence of autoantibodies against GAD65 (GADA) in patients with diabetes  mellitus indicates the presence of autoimmune, type 1 diabetes.
  • Prediction of Type 1 Diabetes: Autoantibodies against GAD65 (GADA) in an asymptomatic individual places the  subject at increased risk for the development of type 1 diabetes.
Specimen Requirements: 

Specimen Requirements: Collect blood in a 1- 5 mL serum separator tube. Centrifuge, separate and transfer the serum to a plastic vial. Ship specimens with a frozen cold pack for overnight delivery.

Stability (collection to shipping of the sample):
  • Ambient: 24 hours
  • Refrigerated: 24 hours
  • Frozen: 1 year (Avoid repeated freeze/thaw cycles.)
Reference Values: 

< 1.1 u/mL

CPT Code (s): 

86341

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