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Complement C4

Test Code
C4


Preferred Specimen
2 mL Lithium Heparin plasma serum (1.0 minimum)


Instructions
Serum should be separated from cells and frozen if not sent to the laboratory within 2 hours.


Transport Container
, PST SST Tube


Transport Temperature


Ambient




Specimen Stability
2 days at 15-25, 2 days at 2-8C0




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.