A 10 year old boy presents with mucosal bleeding of 1 week duration. The investigation of choice that will be most useful in him is -
Ans. is 'd' i.e., Platelete count o Bleeding from mucosal surface suggests thrombocytopenia or defect in platelet function. o First do platelet count, if there is thrombocytopenia, fuher investigation will be required.
Prothrombin time
Clotting time
Paial thromboplastin time
Platelet count