Pediatrics The coagulation profile in a 13–year old girl with Menorrhagia having von Willebrand’s disease is – A Isolated prolonged PTT with a nonnal PT B Isolated prolonged PT with a normal PTT C Prolongation of both PT and PTT D Prolongation of thrombin time 💡 Explanation The coagulation profile in a 13–year old girl with Menorrhagia having von Willebrand's disease is – ✓ Correct Answer: A. Isolated prolonged PTT with a nonnal PT