GAD65 Antibody, CSF




Test Mnemonic

GADCSF

CPT Codes

  • 86341 - QTY (1)

LOINC ®

53708-4

Aliases

  • GAD65 Antibody

Performing Laboratory

Mayo Clinic Dpt of Lab Med & Pathology


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLCerebrospinal fluid (CSF)Sterile container Refrigerated 

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mL     

Stability

Environmental Condition Description
Ambient72 hours
Refrigerated28 days
Frozen28 days

Days Performed

Mon - Fri

Turnaround Time

3 - 7 days

Methodology

Name Description
Immunoprecipitation 

Reference Range

GAD65 Antibody, CSF
Sex Age From Age To Type Range Range Unit
       <= 0.02 nmol/L 

Special Info

This test should not be requested in patients who have recently received radioisotopes, therapeutically or diagnostically, because of potential assay interference. The specific waiting period before specimen collection will depend on the isotope administered, the dose given and the clearance rate in the individual patient. Specimens will be screened for radioactivity prior to analysis. Radioactive specimens received in the laboratory will be held one week and assayed if sufficiently decayed, or canceled if radioactivity remains. Grossly hemolyzed specimens will be rejected. Specimens exhibiting gross lipemia or gross icterus will also be rejected.

Clinical Info

Useful in evaluating patients with stiff-man syndrome, autoimmune cerebellitis and other acquired central nervous system disorders affecting gabaminergic neurotransmission.