Test Code C4 Complement C4
Specimen Required
Lithium Heparin Plasma Separator Tube (GREEN) or
Serum Separator Tube SST (YELLOW
CPT Code
86160
Specimen Handling & Stability
Handle and store specimens in stoppered containers to avoid contamination and evaporation.
Centrifuge specimens to remove the plasma/serum from the cellular material within 2 hours of collection.
Specimen Stability
* Room Temperature: 1 day
* Refrigerated: 7 days
* Frozen: 4 weeks