ARUP's Laboratory Test Directory

Glutamic Acid Decarboxylase Antibody (GAD65) and Insulin Antibodies with Reflex to IA-2 Antibody : 2002862

Mnemonic: GADINS ABS

Methodology: Quantitative Radioimmunoassay/Quantitative Enzyme-Linked Immunosorbent Assay
Performed: Varies
Reported: 2-10 days
Specimen Required: Collect: Serum separator tube or plain red.

Specimen Preparation: Transfer 2 mL serum to an ARUP Standard Transport Tube. (Min: 1 mL)

Storage/Transport Temperature: Frozen.

Unacceptable Conditions: Plasma. Hemolyzed or lipemic specimens.

Stability (collection to initiation of testing): After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 2 months
Reference Interval:
 
Test Number Components Reference Interval
0099228Insulin Antibody Effective May 21, 2012

0.0-0.4 Kronus Units/mL
2001771Glutamic Acid Decarboxylase Antibody 0.0-5.0 IU/mL
0050202IA-2 Antibody 0.0-0.8 Kronus Units/mL

Interpretive Data: The Insulin Antibody assay quantitatively measures human serum autoantibodies to endogenous insulin or antibodies to exogenous insulin.   
Note: If either Insulin Antibody or Glutamic Acid Decarboxylase Antibody is negative, then IA-2 Antibody will be added. Additional charges apply.

Insulin Antibody: Kronus Units are arbitrary. Kronus Units = U/mL
CPT Code(s): 86337; 83516; if reflexed, add 86341
Cross References: GAD65 (Glutamic Acid Decarboxylase Antibody (GAD65) & Insulin Antibodies with Reflex to IA-2 Antibody) , GADAB (Glutamic Acid Decarboxylase Antibody (GAD65) & Insulin Antibodies with Reflex to IA-2 Antibody) , Human Insulin Antibodies (Glutamic Acid Decarboxylase Antibody (GAD65) & Insulin Antibodies with Reflex to IA-2 Antibody) , IA-2 (Glutamic Acid Decarboxylase Antibody (GAD65) & Insulin Antibodies with Reflex to IA-2 Antibody) , Insulin Antibodies (Glutamic Acid Decarboxylase Antibody (GAD65) & Insulin Antibodies with Reflex to IA-2 Antibody)