Glutamic Acid Decarboxylase Antibody
2001771
 
Ordering Recommendation
Not recommended in routine evaluation or management of diabetes mellitus (DM). Glutamic Acid Decarboxylase Antibody (GAD) and IA-2 Antibody (insulinoma antigen 2) (0050202) recommended for initial screening of suspected cases of type 1 DM.
Mnemonic
GAD-AB
Methodology
Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Sun-Fri
Reported
1-3 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Serum separator tube.  
Specimen Preparation
Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL)  
Storage/Transport Temperature
Frozen.  
Unacceptable Conditions
Plasma. Grossly hemolyzed specimens.  
Remarks
 
Stability
Ambient: 24 hours; Refrigerated: 1 week; Frozen: 3 months  
Reference Interval
0.0-5.0 IU/mL
Interpretive Data
A value greater than 5.0 IU/mL is considered positive for Glutamic Acid Decarboxylase Antibody.
Note
CPT Code(s)
83516
Components
Component Test Code*Component Chart Name
2001772Glutamic Acid Decarboxylase Antibody
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • 64K Antibody
  • Anti-GAD Antibodies
  • Anti-Glutamic Acid Decarboxylase Ab
  • Beta Cell Antibody
  • Beta-Cell Autoantibody to GAD 65
  • GAD Antibody
  • GAD-65
  • GAD65
  • GAD65 Antibody Assay
  • Glutamate Decarboxylase Antibodies
  • Pancreatic Islet Cell Ab