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Test ID GD65C Glutamic Acid Decarboxylase (GAD65) Antibody Assay, Spinal Fluid

Useful For

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

Method Name

Radioimmunoassay (RIA)

Reporting Name

GAD65 Ab Assay, CSF

Specimen Type

CSF


Specimen Required


Container/Tube: Sterile vial

Specimen Volume: 1.5 mL


Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
CSF Refrigerated (preferred) 28 days
  Frozen  28 days
  Ambient  72 hours

Reference Values

≤0.02 nmol/L

Reference values apply to all ages.

Day(s) and Time(s) Performed

Monday through Friday; 5 a.m., 2 p.m.

Saturday, Sunday; 7 a.m.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

86341

LOINC Code Information

Test ID Test Order Name Order LOINC Value
GD65C GAD65 Ab Assay, CSF 94359-7

 

Result ID Test Result Name Result LOINC Value
21702 GAD65 Ab Assay, CSF 94359-7

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

NY State Approved

Yes

Forms

If not ordering electronically, complete, print, and send a Neurology Specialty Testing Client Test Request (T732) with the specimen.