In some embodiments, the invention provides a method for identifying a patient suffering from or suspected of suffering in from a disease associated with the cardiovascular system that is having a subnormal response to the treatment for the disease comprising: subjecting a blood sample from a patient being treated for a disease to a viscoelastic analysis in the presence of a known amount of a thrombolytic agent, to obtain a coagulation characteristic value of the patient； and comparing the coagulation characteristic value of the patient to a coagulation characteristic value of a healthy individual, wherein a difference in the coagulation characteristic value of the patient as compared to the coagulation characteristic value of the healthy individual identifies the patient as a patient having a subnormal response to treatment.
