Causes of prolonged prothrombin time are A Treatment with oral anticoagulant drugs B DIC C Haemophilia A D Deficiency of factor XI and XII E Haemolytic disease of newborn Causes of prolonged prothrombin time are Correct Answer Treatment with oral anticoagulant drugs, DIC Bissoy MCQ Team Aug 26, 2023 Basic Science MS Hematology Abnormality of bt/ct/pt