This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
[{'content': 'Following test is used to assess the warfarin dose? \nSelect and explain. \nA. BT, B. CT, C. APTT, D. PT/INR', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e. PT/INR * Monitoring of unfractionated heparin - aPTT* Monitoring of oral anticoagulants - PT/INR* Monitoring of LMW heparins - No monitoring required", 'role': 'assistant'}]