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Specimen Collection Manual and Test Catalog

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RECOMBX(R) RI AUTOANTIBODY TEST

Geisinger Epic Procedure Code:  LAB2991    Geisinger Epic ID:  45229

SPECIMEN COLLECTION
Specimen type: 

Serum


Preferred collection container: 
Alternate collection container: 
3.5 mL gold-top (serum separator) tube
Specimen required: 

2 mL serum; minimum 0.5 mL.



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: 28 days.



TEST DETAILS
CPT code(s):  83520
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: 
Automated Nanoliter Scale Immunoassay
Synonyms: 

Quest client-specific test code 92420, Athena code 4685, RIAUTO


Clinical significance: 

Anti-Ri antibody can be detected in patients with paraneoplastic opsoclonus/myoclonus syndrome. Neoplasms most often associated with anti-Ri include breast cancer, small cell lung cancer, and gynecological cancers. This semi-quantitative assay may be useful in monitoring therapeutic responses in select cases.


Review Date:  12/04/2024

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