Fig. 6From: Comparison of different laboratory tests in the evaluation of hemorrhagic risk of patients using rivaroxaban in the critical care setting: diagnostic accuracy studyActivated partial thromboplastin time (aPTT), (seconds) distribution according to rivaroxaban plasmatic concentration. Normal range is represented by the gray band with a lower limit of 26.8 s (90% confidence interval, CI: 26.1–27.5) and a upper limit of 35.6 s (90% CI: 34.7–36.6)Back to article page