Pediatrics General 6fc617f9 The coagulation profile in a 13-year old girl with menorrhagia having von Willebrand's disease is ? A Isolated prolonged PTT with a normal PT B Isolated prolonged PT with a normal PTT C Prolongation of both PT and PTT D Prolongation of thrombin time High-Yield Explanation Ans. is 'a' i.e., Isolated prolonged PTT with a normal PT