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11335: C4 Binding Protein, Serum Print View
C4 Binding Protein, Serum RID    mg/L 

PRIMARY
1 Serum 1 (0.5) mL   Frozen - 30 Day(s)  
ALTERNATE

C4B is a complement binding protein that specifically binds 50% circulating protein S, a vitamin K dependent cofactor of protein C activation. Since C4B may be elevated in certain disease states, this may affect the available "free protein S" to engage in anticoagulant activity.

Ship specimens frozen on dry ice to ensure sample integrity. Do not
thaw.
Setup Schedule
Sunday

Reported (Analytical Time)
4 days

CPT Code
86329

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 payer being billed.

Notes
Transport Temperature: Frozen
Methodology: Radial Immunodiffusion






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