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TEST NAME: Properdin Factor B (Complement C3 Activator)

CPT CODE: 86160
NGMC CODE: C3PA
SPECIMEN REQUIREMENTS: 1 mL serum. Refrigerate.
DEPT/TURNAROUND: Send Out/2-3 days
METHODOLOGY: Nephelometry
REFERENCE RANGES: 18-46 mg/dL

Interpretation:

Depressed C3 accompanied by lowered PFB suggests alternate pathway activation.

Depressed C3 and C4 suggest classical pathway activation.

An absence of PFB in the presence of a normal CH(50) suggests a PFB deficiency.

                                                                                                                                                    


 

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