Table 3.

Suitable laboratory tests for rivaroxaban and clinical situations

Chromogenic anti-Factor Xa assay	Prothrombin time test
(with rivaroxaban calibrators)	(with rivaroxaban-sensitive reagent)
• Acute renal failure	• Emergency situations when an anti-Factor Xa assay is not available
• Bleeding complications or thrombosis during treatment
• Emergency situations (if available in time):
Prior to urgent surgery
Life-threatening bleeding
Stroke (if fibrinolytic treatment indicated)
Acute percutaneous coronary intervention (if heparin bolus indicated)
• Overdose
• Suspected accumulation of drug