The new CoaguChek XS System uses exclusive smart technology to help ensure accurate results offering the flexibility and control you need to confidently manage a wide range of anticoagulated patients. The CoaguChek® XS system is a convenient, portable and user-friendly instrument for monitoring oral anticoagulation therapy. It determines the INR value (International Normalized Ratio) from a drop of capillary whole blood ‚ it's simple, precise and reliable. -Accurate PT/INR results within 60s. Automated quality assurance for every strip. Results of comparable accuracy and precision to lab tests.