Glutamic Acid Decarboxylase Antibody
Label Mnemonic: GAD
Epic Lab Code: LAB3224
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Serum
Collection Medium:
Red top tube 5 mL (Clot Activator)
Minimum:
Preferred Minimum: 1.0 mL serum
Absolute Minimum: 0.5 mL serum
Rejection Criteria:
Plasma. Grossly hemolyzed specimens.
Turn Around Time:
1-3 days upon receipt at reference laboratory
Reference Range:
0.0-5.0 IU/mL
Interpretive Data:
A value greater than 5.0 IU/mL is considered positive for Glutamic Acid Decarboxylase Antibody.
Comments:
Not recommended in routine evaluation or management of diabetes mellitus (DM). Glutamic Acid Decarboxylase Antibody (GAD) and IA-2 Antibody recommended for initial screening of suspected cases of type 1 DM.
Methodology:
Semi-quantitative Enzyme-Linked Immunosorbent Assay
CPT Code:
83516