Impact of CEA

I got a health check up done in August where my CEA (Carcino Embryonic Antigen) level came at 5.03. I am an non-smoker and the reference range given is <3.0. I got another test done in September and the number came to 4. Why would I have it so high? What should I do next?
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Doctor Answers (1) on Impact of CEA

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Harisha N L Bangalore | General Physician
The normal range for CEA in an adult non-smoker is <2.5 ng/ml and for a smoker <5.0 ng/ml...The best use of CEA is as a tumor marker, especially for cancers of the gastrointestinal tract. When the CEA level is abnormally high before surgery or other treatment, it is expected to fall to normal following successful surgery to remove all of the cancer...Consult nearest gastroenterologist they will do the needful.
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