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HelpTest Code C1QAB C1Q Autoantibody
Additional Codes
EPIC Order: Miscellaneous Lab Test (LAB000)
NJML test ID: C1QAB
Performing Laboratory
National Jewish Medical Laboratory
Specimen Requirements
Patient Preparation: None
Container/Tube
Preferred/Acceptable: Plain red-top tube
Collection Volume: 2.0 mL (minimum 0.6 mL)
Submission Container/Tube: If specimen is coming from outside facility aliquot processed sample into a plastic vial for transport.
Special Instructions: Send a completed "Advanced Diagnostic Laboratories National Jewish Health Complement Testing" requisition with specimen. Send specimen and req promptly to lab.
Sample Rejection
Mislabeled or unlabeled specimens
Specimen collected in gel tubes
Logistics
Test Availability: Monday-Sunday
Cut-off time: None
Days Set-up: 3rd Thursday of month
Turnaround Time: up to 4 weeks
Reference Values
Reference Interval: <7% of standard
Critical Values: None established
Methodology
ELISA
Limitations
- NA
Additional Information
FOR SLCH CORE LABORATORY USE ONLY
Lab Processing Instructions: Allow blood to clot at room temp (37o C) for 20-60 minutes. Centrifuge specimen to separate. Immediately transfer cell-free serum into a 5-mL screw-capped plastic vial for transport. Place aliquot vial in dry ice to freeze immediately.
Processed Volume: 1.0 mL (minimum 0.3 mL) serum
Transport Temperature: Frozen
Analyte Stability:
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood (unprocessed) | Ambient | NA |
| Plasma/Serum (processed) | Refrigerated | NA |
| Ambient | NA | |
| Frozen @ -60o (preferred) | 1 year |
NOTES:
- Send frozen specimen direct to National Jewish by Priority Overnight on dry ice. Send Monday-Thursday only. Send the completed "National Jewish Complement Lab" requisition with specimen.
- Serum separator gel tubes are not acceptable, cancel if collected in SST tube.
- If multiple tests are ordered on specimen for NJML, each test must have it's own aliquot tube.
Test Classification and CPT Code
83520
LOINC
NA
Last Reviewed
10/2025