Conversation: The conversation between human and AI assistant.
[|Human|] Hi, I just done my yearly blood test screening. All result are okay, but CEA is 20n. I don t have cancer history nor my family do. I don t sense any cancer symptoms as well. I just have c-sec delivery 1/2 ago, not sure if this affected. What should i do for this high level CEA? Should I redo again the blood test ? What should i do for
[|AI|]  Hi, Thanks for writing in. The normal value of CEA is less than 3 in healthy non-smokers. It can indicate cancer of bowel, pancreas, ovary, breast, liver and lung among many others. However, it does not always indicate cancer in a person without symptoms. The concentration of carcinoembryonic antigen (CEA) in serum should not be used to screen asymptomatic individuals for neoplastic disease, and the diagnostic efficacy of CEA measurements in high-risk groups has not been established. Single values of CEA are less informative than changes assessed over time. Please discuss with your doctor and get the test repeated after a few weeks and to check if it is a concern. Please do not worry.