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Test Directory

Test Directory Complement Component C1q

Complement Component C1q

Test Summary

The complement system is critical to the inflammatory response. C1q concentrations may be decreased in patients with acquired angioedema, immune complex induced vasculitis, and concurrent low concentrations of C1 inhibitor, carcinoma, or lymphoma.

Aliases

C1Q Complement Component
Component C1Q

Specimen Collection

Special Instructions

N/A

Preferred Specimen

1 mL serum

Minimum Volume

0.1 mL

Instructions

Separate serum within one hour of draw time and refrigerate.
Can be drawn in a gel barrier tube but needs to be separated within one hour from time drawn.

Patient Preparation

N/A

Storage

N/A

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: 4 days
Refrigerated: 10 days
Frozen: 29 days

Limitations

N/A

Other Acceptable Specimens

Plasma collected in: EDTA (lavender-top) tube or PPT (white-top) tube

Unacceptable Specimens

Gross hemolysis • Gross lipemia

Order Code

C1Q

EPIC (Premier) Code

LAB075

Includes

N/A

CPT Code

86160

Billing Code

670608

CPT Statement

Methodology

Radial Immunodiffusion (RID)

FDA Status

This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Physician Attestation of Informed Consent

N/A

Testing Laboratory

Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano CA, 92675

Department

Reference Testing

Reference Range

5.0-8.6 mg/dL

Setup Schedule / Expected Turnaround Time

Daily; Report available: 3 - 7 days