Complement Components C3 & C4

Supply #T01 - Red/Gray SST 8.5mL

Test Code: 5704

CPT Code(s): 86160 (x2)

Includes: Complement Component C3C; Complement Component C4C

Methodology: Immunoturbidimetric

Clinical Significance: Decreased concentrations of both C3 and C4 suggest activation of the classical pathway, whereas decreased concentration of just C3 suggests activation of the alternative pathway. Both complement factors may be used to monitor activity of patients with systemic lupus erythematosus (SLE) and immune complex-induced vasculitis.

Alternative Name(s): C4 and C3 Complements, C3 and C4 Complements

Collection Guide: 

Supply: T01 - Red/Gray SST 8.5mL

Preferred Specimen: Serum

Preferred Volume: 1mL

Transport Container: Serum Separator Tube (SST)

Transport Temperature: Refrigerated

Specimen Stability: Refrigerated: 4 days

Rejection Criteria: Ambient serum

For additional supply or collection device information, please contact DLO's Customer Service at (800) 891-2917, option 2.

The CPT codes provided 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.