This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autacoids, Subject name: Pharmacology
A patient on Aspirin will have increasing in 
Select and explain. 
A. Bleeding time, B. Clotting time, C. Prothrombin time, D. Activated paial thromboplastin time
A: Bleeding time
Answer: A: Bleeding time 
Explanation: Antiplatelet drugs like asprin and clopidogrel prolong the bleeding time Anticoagulant drugs prolong the clotting time Drugs interfering with extrinsic pathway like Warfare in prolonged the PT Drugs interfering with intrinsic pathway like heparin prolong the aPTT. Thrombin time is prolonged in cases of afibrinoginemia and dysfibrinogenemia. Refer kDT 6/e p609