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