Pathology In a platelet poor plasma sample calcium and tissue thromboplastin is added. This is used to assess which of the following pathway? A Extrinsic B Intrinsic C Fibrinolytic D Common 💡 Explanation In a platelet poor plasma sample calcium and tissue thromboplastin is added. This is used to assess which of the following pathway? ✓ Correct Answer: A. Extrinsic