Vancomycin Calculator - ClinCalc.com
clincalc.com › vancomycin2. Extrapolate to C max (peak) and C min (trough) Using the first-order elimination equation (\(Cp = Cp^0*e^{-kt}\)), a true peak (C max) can be calculated using the time elapsed between the end of the vancomycin infusion and the first drug concentration (Cp 0).