Complement Component C5

Message
For Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.


Test Code
C5


CPT Codes
84155, 84165, 86160

Preferred Specimen
1 mL serum


Minimum Volume
0.1 mL


Instructions
Please note: Plasma samples are not acceptable


Transport Temperature
Room temperature


Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 7 days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Grossly lipemic • Hemolysis • Microbially contaminated


Methodology
Radial Immunodiffusion (RID)

Setup Schedule
Set up: Tues, Thurs, Sat; Report available: 4-6 days


Reference Range
6.0-20.0 mg/dL


Clinical Significance
The complement system is critical to inflammatory responses. C5-C9 are components of the common pathway. Patients with congenital deficiency of any of these components are at risk of meningococcal menigitis.


Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042



Last Updated: November 29, 2021


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.