This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
The following laboratory determinants is abnormally prolonged in ITP : 
Select and explain. 
A. APTT, B. Prothrombin time, C. Bleeding time, D. Clotting time
C: Bleeding time
Answer: C: Bleeding time 
Explanation: Answer is C (Bleeding time) Bleeding time is indicative of function of platelets. In any form of thrombocytopenia it is platelets that are affected and hence tin, deranged ',ammeter would he bleeding time. PT, APTT and Clotting time are parameters of coagulation disorders and not bleeding disorders. These parameters will be normal in disorders of platelet function