GLUTAMIC ACID DECARBOXYLASE (GAD) AUTOANTIBODIES

Test Documentation
Specimen Required
Draw blood in a SST. Centrifuge, separate and send 0.5 mL serum (0.2 mL minimum) frozen in a screw-capped plastic vial.

Alternate Specimen
Serum: Red-top

Rejection Criteria
Gross hemolysis, lipemia, plasma

Methodology
Enzyme-Linked Immunoassay

Stability
Room Temperature: Unacceptable; Refrigerated: 7 days; Frozen: 14 days

Reference Range
<5.0 IU/mL

Performed
Tuesday, Friday

Turnaround Time5 days
Test CodeGADAB
CPT-4 Code (s)
83520
LOINC Codes
13926-1

Warde
Medical
Laboratory