7526 C3, Complement

Specimen Type Specimen Stability Reference Range
Serum 72 Hours, Ambient
7 Days, Refrigerated
Frozen-30 Days
90 - 180 mg/dL

Specimen Requirements

Specimen Type: Serum
Container: 1 Serum Separator Tube (SST)
Temperature: Refrigerated
Preferred Vol: 1.00 mL
Min Vol: 0.50 mL




Monday - Saturday

Turn-Around Time



Clinical Utility

Activation of the complement system takes place via a classical and an alternative route. Depressed values are observed in a number of inflammatory and infectious diseases. Primary causes are systemic lupus erythematosus(SLE), rheumatoid arthritis, subacute bacterial endocarditis, viremia, parasitic infections or bacterial sepsis. As an acute phase protein C3 is produced to an increased extend during inflammatory processes. It is elevated in systemic infections, non-infectious chronic inflammatory conditions (primarily chronic polyarthritis) and physiological states (pregnancy).

CPT Codes


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