Glutamic Acid Decarboxylase (GAD65) Antibody

Synonyms

  • ANTI-GAD
  • GLUTAMATE
  • GLUTAMIC ACID DECARBOXYLASE
  • LAB650

Cerner Name

Glutamic Acid Decarboxylase

Clinical Info

Assessing susceptibility to autoimmune (type 1, insulin-dependent) diabetes mellitus and related endocrine disorders (eg, thyroiditis and pernicious anemia)
Distinguishing between patients with type 1 and type 2 diabetes
Confirming a diagnosis of stiff-man syndrome, autoimmune encephalitis, autoimmune ataxia, brain stem encephalitis, autoimmune epilepsy, autoimmune myelopathy; titers generally greater than or equal to 20.0 nmol/L

Specimen Sources

Blood, Arterial Blood, Capillary Blood, Central Line Blood, Venous

Specimen Types

Blood

Specimen Volume

1.5 mL serum (1.0 mL min)

Container

Gold Top Tube

Collection Instructions

Container/Tube: Red top or Gold Top Tube
Specimen: 1.5 mL serum (1.0 mL min)

Transport Instructions

Refrigerated

Specimen Stability

72 Hours Room Temperature
28 Days Refrigerated or Frozen

Methodology

Immunoprecipitation Assay (IPA)

Days Performed

TAT: 4-7 Days

Performing Laboratories

Mayo Medical Laboratories

CPT

86341
LOINC Code 94345-6

PDM

5910600

Results
Component Name Base Name Common Name External Name
GLUTAMIC ACID DECARBOXYLASE ANTIBODY GADAB GLUTAMIC ACID DECARB AB GAD65 Ab Assay, S

Result Interpretation

≤0.02 nmol/L

Reference values apply to all ages.

Forms
Endocrine LAB650 build edit