A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Ri Antibody Screen with Reflex to Titer and Western Blot
Test CodeRIAB
Quest Code
10140
Alias/See Also
ANNA-2
Ri Anti-neuronal Nuclear Ab 2
Anti-Ri
Neuronal Nuclear Ab
Ri Anti-neuronal Nuclear Ab 2
Anti-Ri
Neuronal Nuclear Ab
CPT Codes
86255
Includes
If Ri Antibody Screen, IFA is positive, then Ri Antibody, WB will be performed at an additional charge (CPT code(s): 84181).
If Ri Antibody, WB is positive, then Ri Antibody, Titer will be performed at an additional charge (CPT code(s): 86256).
If Ri Antibody, WB is positive, then Ri Antibody, Titer will be performed at an additional charge (CPT code(s): 86256).
Preferred Specimen
1 mL serum
Patient Preparation
Overnight fasting is preferred
Minimum Volume
0.3 mL
Transport Container
Plastic screw-cap vial
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 21 days
Refrigerated: 14 days
Frozen: 21 days
Methodology
Immunofluorescence Assay (IFA) • Western Blot (WB)
FDA Status
This test was developed and its performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. Performance characteristics refer to the analytical performance of the test.
Setup Schedule
Set up: Mon, Wed, Fri a.m; Report available: 6 days
Reference Range
Ri Ab Screen, IFA | Negative |
Ri Ab, WB | Negative |
Ri Ab, Titer | <1:40 |
Clinical Significance
Anti-Ri can be detected in patients with the paraneoplastic opsoclonus/myoclonus syndrome. Neoplasms most often associated with Anti-Ri include breast cancer, gynecological cancers, and small cell lung cancer.
Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
33608 Ortega Highway |
San Juan Capistrano, CA 92675-2042 |
Last Updated: August 12, 2019