Conversation: The conversation between human and AI assistant.
[|Human|] Does a CEA Blood Test showing a level of 7.5 in an 85 year old man indicate the presence of cancer and should a colonoscopy be done even if he is on coumadin because he has an artificial valve. Is it and urgent matter. We want it to be done in a hospital and have time for the coumadin clinic to set up a schedule for stopping coumadin and taking lovalax.
[|AI|]  Hi, you did not mention the clinical history of your father. Why the CEA estimation has been done is not clear. Is there any history of altered bowel habit or stool mixed with blood? Coumadin can also be the cause. Anyway CEA 7.5 (you have not mentioned the unit) does not signify malignancy. Slightly higher than normal (normal 2.5-5 microgram/L). Increased in smokers also. Anyway consult your doctor regarding this issue.