Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  

GAD65 INSULIN DEPEND

ORDERING INFORMATION:
Sunquest Test Code:
GADC      Geisinger Epic Procedure Code: GADC         Geisinger Epic ID: 46333

SPECIMEN COLLECTION
Specimen type:
Serum
Preferred collection container:
Alternate Collection Container:
3.5 mL gold-top (serum separator) tube
Specimen required:
1 mL aliquot of serum; minimum 0.5 mL.
Special notes:
See Specimen Processing Instructions.

SPECIMEN PROCESSING
Specimen processing instructions:
Centrifuge and transfer serum from the cells to a sterile, plastic, screw-capped vial(s). 
Transport temperature:
Refrigerated.
Specimen stability:
Room temperature: 7 days. Refrigerated: 14 days. Frozen: 28 days.

TEST DETAILS
CPT code(s):
86341
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Glutamic acid decarboxylase antibody.
Methodology:
Enzyme-Linked Immunosorbent Assay (ELISA)
Synonyms:
ANTI GAD, GAD65 INSULIN DEPENDENCE AB
Quest test code 34878
Clinical significance:
Glutamic Acid Decarboxylase (GAD-65) Antibody is useful to diagnose insulin dependent diabetes mellitus (IDDM, Type I diabetes), to assess risk for development of IDDM, to predict onset of IDDM, and risk of development of related endocrine disorders, e.g., thyroiditis. Before clinical onset, Type I diabetes is characterized by lymphocytic infiltration of the islet cells, and by circulating autoantibodies against a variety of islet cell antigens, including GAD-65, IA-2 (a tyrosine phosphatase-like protein), and insulin autoantibody (IAA).

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Set up Sunday - Friday. Report available same day.    
Performed stat? No
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