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Test Code
CC1Q
Test Name
Complement Component 1Q Level
CPT Codes
86160
Expected Turnaround Time
5 - 10 days
Clinical Utility

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.
Specimen and Container Info

Preferred Specimen Type: Serum

Alternate Specimen Type: Plasma

Preferred Collection Container: Red Top, Plain

Alternate Collection Container: Lavender Top (EDTA), White Top (EDTA), or Gold Top, Serum Separator

Desired Specimen Volume: 1 mL
Collection Instructions
  1. Collect a red top, plain tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells within one hour of collection.
  2. Transfer 1 mL of serum to a clear aliquot tube (screw cap).
Transport Instructions

Transport to the laboratory refrigerated.
Stability Requirements

Room Temperature

4 days

Refrigerated

10 days

Frozen

29 days

Freeze/Thaw Cycles

 Stable x3
Causes for Rejection
  • Gross hemolysis
  • Grossly lipemic
Methodology
Radial Immunodiffusion
Reference Intervals

See patient report.
Alternate Names
  • C1q Complement Component
Reference Lab
Quest Diagnostics Nichols Institute
Testing Schedule
Routine, 2 times per week
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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