Signs of the concomitant drug interfering peaks caused by each type of analyte and RT IS required in the range of ± 20% of the average value of the analyte and signs the LLOQ IS (LLOQ injection of 3 times).
Signs of interfering peaks caused by each type of concomitant drug at RT of the analyte and IS to be in the range ± 20% of the average signal of the analyte and IS LLOQ (made from injection LLOQ 3 times).