Test Overview
Test Methodology
Immunoprecipitation Assay
Test Usage
Assessing susceptibility to autoimmune (type 1) diabetes mellitus and related endocrine disorders. Distinguishing between type 1 and type 2 diabetes. Confirming diagnosis of stiff-man syndrome and related autoimmune encephalomyelopathies.
Reference Range *
< or = 0.02 nmol/L
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Monday, Wednesday, Friday
Analytic Time
3 - 8 days
Soft Order Code
GD65C
Synonyms
- Anti-GAD
- GAD (Glutamic Acid Decarboxylase) Antibody
- GAD65
- ICAB
- Islet Cell Cytoplasmic Antibody
- Stiffman Syndrome
- GAD65 Ab Assay, CSF
- GAD CSF
Laboratory
Sendout
Reference Laboratory
Mayo GD65C (84221)
Section
Special Testing
Specimen Requirements
Collection Instructions
Collect spinal fluid; refrigerate.
Normal Volume
1.5 mL CSF
Minimum Volume
1 mL CSF
Additional Information
Test sent to Mayo Medical Laboratories.
Billing
CPT Code
86341
Fee Code
30955