Thromboelastometry monitoring (rotation thromboelastometry) is different to conventional tests of blood coagulation, which look at isolated stages of blood clotting in plasma. The thromboelastograph looks at the whole process of blood coagulation using whole blood. The measurement is displayed as a graph from the beginning of clot formation to fibrinolysis. It measures the time taken for the clot to form - i.e. the kinetics of clot formation and the tensile strength of the clot. The blood clot has both viscous and elastic properties and it is the elastic shear properties of the clot that the thromboelastograph measures.