Pathology A 9-year-old boy with elevation in both PT and APTT. What is the diagnosis? A Defect in extrinsic pathway B Defect in intrinsic pathway C Platelet function defect D Defect in common pathway 💡 Explanation A 9-year-old boy with elevation in both PT and APTT. What is the diagnosis? ✓ Correct Answer: D. Defect in common pathway