Abstract: A microfluidic passive device and a method for determining clotting time are described, of a fluid medium such as blood, of low production cost which can therefore be disposable. When optimized to determine blood clotting time, it requires a minimal whole blood sample (<5 ?L) and it is particularly suited to INR and PT determination, which can be used to autonomously by patient without venipuncture. Monitoring and processing means to interpret the results are comprised in an external coagulometer device. A production method for the manufacture of the microfluidic device is also provided.

Abstract: A microfluidic passive device and a method for determining clotting time are described, of a fluid medium such as blood, of low production cost which can therefore be disposable. When optimised to determine blood clotting time, it requires a minimal whole blood sample (<5 ?L) and it is particularly suited to INR or PT determination, which can be used autonomously by patient without venipuncture. Monitoring, and processing means to interpret the results are comprised in an external coagulometer device. A production method for the manufacture of the microfluidic device is also provided.

Abstract: A method for determining clotting time is described, of a fluid medium such as blood. This method monitors and compares the propagation of the fluid medium having a regent with a theoretical value. The clotting time is determined when monitored value deviates from the theoretical value.