Fig. 2From: Supporting the use of a coagulometric method for rivaroxaban control: a hypothesis-generating study to define the safety cut-offsDOAC-test coagulometric method. Ten plasmas among 158 assayed for R-C value were above R-C of 4.5 proposed as cut-off for increased bleeding tendency. Patients were above range at peak time only. The value at peak R-C is 5.39 ± 1.01, with a median of 5.13. Peak vs. trough values: p < 0.001Back to article page