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
Following test is used to assess the warfarin dose? 
Select and explain. 
A. BT, B. CT, C. APTT, D. PT/INR
D: PT/INR
Answer: D: PT/INR 
Explanation: 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