Specimen Requirements
Title
GLUTAMIC ACID DECARBOXYLASE (GAD) AUTOANTIBODIES
Specimen Requirement
Collect SST or red top. Centrifuge, transfer 0.5 mL serum to a screw capped plastic vial, indicate specimen type on tube, send refrigerated or frozen.
Methodology
Enzyme-Linked Immunoassay
Stability
Room Temp Unacceptable; Refrigerated 7 days; Frozen 14 days
Reference Range
By Report*
Turnaround
1-4 days, Performed Tuesday & Friday
Clinical Use
Detect the presence of antibodies to glutamic acid decarboxylase, which provides early evidence of autoimmune disease activity; its measurement has been shown to be useful in assisting the physician in the prediction, diagnosis, and management of patients with diabetes
Test Code
GADW