| 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 Code10140
Alias/See Also
LAB00297
RI AB
RI 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
0.5 mL serum
Patient Preparation
Overnight fasting is preferred
Minimum Volume
0.2 mL
Transport Container
Transport tube
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 analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Mon, wed, fri
Report Available
1-6 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 |