Be careful..: Do not put too much value on a blood test by itself. CEA of 3 or less is considered "normal". Smokers have higher CEAs; up to 5, maybe 10. Anything higher than that is suspicious but by no means diagnostic of recurrence. So called "tumor markers" sometimes go up in non malignant diseases or even for no detectable reason at all. Scans and sometimes biopsies are needed to confirm cancer. Best 2U!
Answered 9/29/2017
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