Insulin Autoantibodies (IAA)

Methodology: 
Radioimmunoassay
Performed: 
Monthly
Reported: 
10 - 20 business days
Use: 
  • Diagnosis of Type 1 Diabetes: The presence of autoantibodies against insulin (IAA) in patients with diabetes mellitus indicates the presence of autoimmune, type 1 diabetes. It is advised that blood for IAA testing be drawn before insulin therapy is initiated. For the IAA result to be valid, the patient must not be insulin treated for more than 1 week.
  • Prediction of Type 1 Diabetes: Autoantibodies against insulin in an asymptomatic individual places the subject at increased risk for the development of type 1 diabetes.
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: 

< 120 nU/mL

CPT Code (s): 

86337

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