Glutamic Acid Decarboxylase Antibody
| Label Mnemonic: | GAD |
| Epic code: | LAB3224 |
| Downtime form: | A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery |
Commercial Mailout Laboratory
6240-8 RCP
356-8593
6240-8 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
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:
86341