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Test Code
C5C
Test Name
Complement C5
CPT Codes
86160
Expected Turnaround Time
10 - 13 days
Clinical Utility

Follow-up test for complement activity screening when CH50 and AH50 are low or absent and high suspicion remains for complement deficiency.
Specimen and Container Info

Specimen Type: Serum

Collection Container: Gold Top, Serum Separator

Desired Specimen Volume: 1 mL
Collection Instructions
  1. Collect a gold top, serum separator tube via venipuncture.
Processing and Submission Instructions
  1. Allow specimen to clot for one hour at room temperature.
  2. Separate serum from cells ASAP or within two hours of collection.
  3. Transfer 1 mL of serum to a clear aliquot tube (screw cap).
  4. Separate specimens must be submitted when multiple tests are ordered.
Transport Instructions

Transport to the laboratory frozen. 
Stability Requirements

Room Temperature

2 hours

Frozen

14 days
Causes for Rejection
  • Non-frozen specimens
  • Specimens exposed to repeated freeze/thaw cycles
  • Specimens left to clot at refrigerated temperature
Methodology
Quantitative Radial Immunodiffusion
Reference Intervals

See patient report.

Alternate Names
  • Complement Component 5
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Routine Tuesday, Friday
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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