RNP Antibody
| Label Mnemonic: | RNP |
| Epic code: | LAB1249 |
| Downtime form: | Doctor/Provider Orders - Pathology Core and Specialty Care Nursery |
Chemistry
6240 RCP
356-3527
6240 RCP
356-3527
Specimen(s):
Plasma
Collection Medium:
 |
| Plasma Separator Tube 4.5 mL |
Alternate
Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3.0 mL whole blood from light green top tube or TWO
Microtainer® devices
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around
Time:
3 hours (upon receipt in laboratory)
Reference Range:
1.0 AI (antibody index) or less
Interpretive Data:
This test covers both RNP A and RNP 68. RNP antibodies occur in
approximately 50% of patients with lupus erythematosus (LE) and may
also occur in patients with other connective tissue diseases, notable
mixed connective tissue disease (MCTD). MCTD is characterized by high
levels of RNP antibodies without detectable Smith (Sm) or double-
stranded DNA antibodies.
Comments:
Assay methodology and reference ranges changed February 25, 2013.
Methodology:
Multiplex flow immunoassay
CPT Code:
86235