Fig. 3From: Supporting the use of a coagulometric method for rivaroxaban control: a hypothesis-generating study to define the safety cut-offsSixty six plasma samples among 158 assayed for R-C value were below an R-C of 1.65, which was proposed as the cut-off for increased pro-thrombotic tendency. Three patients were below range at both peak and trough. The value at trough R-C is 1.30 ± 0.18, with a median of 1.35. Peak vs. trough values: p < 0.001Back to article page