Glutamic Acid Decarboxylase GAD

Synonyms

Allscripts (AEHR) Order Name

Glutamic Acid Decarboxylase Antibody

Sunrise Clinical Manager (SCM) Order Name

Glutamic Acid Decarboxylase Antibody

EPIC Order Name

Glutamic Acid Decarboxylase (GAD65) Antibody

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 Type

Blood

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 Laboratory

Mayo Medical Laboratories

CPT

86341
LOINC Code 94345-6

PDM

5910600

Result Interpretation

≤0.02 nmol/L

Reference values apply to all ages.

Forms