Fig. 1From: Dose-dependent artificial prolongation of prothrombin time by interaction between daptomycin and test reagents in patients receiving warfarin: a prospective in vivo clinical studyThe relative change of PT-INR and the difference in daptomycin concentrations [Dap] between trough and peak. Linear regression lines with a 95% confidence interval for the predicted mean are shown separately for warfarin users and non-users. The reagent numbers are shown in the top left. PT-INR prothrombin time international normalised ratioBack to article page