− | |PT (prothrombin time) is used to assess the extrinsic pathway of the clotting cascade. Most clotting disorders (e.g hepatopathy, DIC) result in prolonged PT. Prolonged PT may be detectable prior to prolonged aPTT (intrinsic and common pathway). | + | |'''PT (prothrombin time)''' is used to assess the extrinsic pathway of the clotting cascade. Most clotting disorders (e.g hepatopathy, DIC) result in prolonged PT. Prolonged PT may be detectable prior to prolonged aPTT (intrinsic and common pathway). |