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Specimen Collection Manual and Test Catalog

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GAD65 NEUROLOGICAL SYNDROME ANTIBODY TEST

Geisinger Epic Procedure Code:  LAB2335    Geisinger Epic ID:  42037

SPECIMEN COLLECTION
Specimen type: 

Serum


Preferred collection container: 
Specimen required: 

2 mL serum; minimum 0.5 mL


Special notes: 

Serum must be separated from whole blood within 48 hours of collection.



SPECIMEN PROCESSING
Processing instructions: 

Serum must be separated from whole blood within 48 hours of collection.


Transport temperature: 

Refrigerated.


Specimen stability: 

Room temperature: 72 hours. Refrigerated: 28 days. Frozen: 4 months.


Rejection criteria: 

Gross hemolysis. Lipemic. Turbid. Bacterial contamination.



TEST DETAILS
CPT code(s):  86341
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.

Methodology: 
Enzyme-Linked Immunosorbent Assay (ELISA)
Synonyms: 

Quest test code 92414. Athena test code 422., GAD65


Clinical significance: 

Detection of GAD antibodies for PNS.


Review Date:  12/04/2024

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