Casandra
Casandra Test Code QD26937Version 1 (DRAFT)
Performing Lab
C1q Antibody (IgG)
Also known as: C1q autoantibody, Anti-C1q, C1q IgG, C1q Ab
Clinical Use
Order TestUse
This assay serves as a non‑invasive aid for the diagnosis of active proliferative lupus nephritis (LN) and for monitoring disease activity. Autoantibodies to C1q (IgG isotype) are detected in a number of autoimmune and infectious diseases and correlate with disease activity in lupus nephritis.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Immunoassay (ELISA)
Biomarkers
C1q Ab (IgG)
AnalyteC1q Ab (IgG)
Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
LOINC Codes
Result Codes
- 44702-9 - C1q Ab Ser-aCnc
Result Turnaround Time
2-6 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.3 mL
Container
red‑top tube (no gel)
Causes for Rejection
Serum separator tube
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 14 days |
| Frozen | 42 days |
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