Casandra
Casandra Test Code QD80430Version 1 (DRAFT)
Performing Lab
Sm and Sm/RNP Antibodies
Also known as: Anti-Ribonucleic Protein Antigen, Anti-ENA Antibody, ENA Antibodies, Ribonuclear Protein Antibody, Anti-Smith Antibody
Clinical Use
Order TestUse
This test detects autoantibodies associated with systemic lupus erythematosus (SLE) and mixed connective tissue disease (MCTD). Sm antibodies are highly specific for lupus, while Sm/RNP antibodies appear in MCTD and sometimes overlap syndromes, supporting diagnosis and informing evaluation of autoimmune activity alongside other clinical and laboratory findings.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Immunoassay
Biomarkers
2 components
Sm AntibodySm/RNP Antibody
Result Turnaround Time
2-3 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
1 mL
Minimum Volume
0.5 mL
Causes for Rejection
Gross hemolysis, gross lipemia, gross icterus
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 4 days |
| Refrigerated | 7 days |
| Frozen | 30 days |
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