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HelpTest Code U1RNP Anti-RNP Ab
Additional Codes
Meditech Order: ANTIRNP
Panel Order:ENAE
Alias
U1 RNP
Intended Use
EliA U1RNP is intended for the in vitro semi-quantitative measurement of IgG antibodies directed
to U1RNP in human serum and plasma (Li-heparin, EDTA) as an aid in the clinical diagnosis
of mixed connective tissue disease (MCTD) and systemic lupus erythematosus (SLE) in
conjunction with other laboratory and clinical findings. EliA U1RNP uses the EliA IgG method
on the instrument Phadia 250.
Performing Lab
Boone Health Laboratory
Collection Method
Venous Collection
Container
Gold Serum Tube
Instructions/Special Handling
None
Preferred Specimen
Gold SST Serum Tube
Red Serum
Acceptable Specimes
- Plasma
- Lithium Heparin
- EDTA
Units
| EliA U/mL |
Reference Ranges
| <5.0 | Negative |
| >10.0 | Positive |
| 5.0-10.0 | Equivoval (recommend retesting after 8-12 weeks) |
| >240 | >240 EliA U/mL |
Critical Values
N/A
Reasons for Rejection
| Hemolysis | No Hemolysis |
| Icterus | |
| Lipemia | No Lipemia |
| Other | Contaminated specimens, QNS, Improperly labeled, Improper specimen type |
Specimen Stability
| Ambient (15-25°C) | 8 hours |
| Refrigerated (2-8°C) | 14 days |
| Frozen (-20°C) | 12months (only one freeze thaw cycle) |
Performance Information
| Days/Times Performed | Monday, Wednesday and Friday |
| Expected Turn around Time | 1-3 days |
| Methodology/Method Description | EliA IgG |
CPT Code(s)
86235