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Test Code C3 C3 Complement, LAB152

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements


Preferred: Gold-top serum gel tube or plain, red top tube

Specimen Volume:  0.5 mL of serum

Stability:  Samples may be stored at 2-8°C for up to 3 days, but for prolonged storage they

                  should be kept frozen at -20°C or below for up to 8 days.  Do not freeze and

                  thaw serum more than once.

Collection Instructions: Sample should be allowed to completely clot before centrifugation.

Reference Values

81 - 157 mg/dL

Useful For

C3c is the major protein component of the complement system, and has a fundamental role in the inflammatory response and immune system functionality.  C3c is produced in the liver, and accordingly reduced complement activity is associated with severe liver failure. 

Day(s) Test Set Up

Monday & Thursday



Test Classification and CPT Coding