Prothrombin time is used in public health to monitor the safety and efficacy of anticoagulant therapy in populations. It can also be used in epidemiological studies to understand the distribution of clotting disorders and to identify populations at risk. For example, in areas where vitamin K deficiency is prevalent, PT testing can help in planning nutritional interventions. Additionally, PT can be used to monitor the impact of liver disease on public health and to evaluate the effectiveness of liver disease prevention programs.
