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A member asked:
Might it be possible that a a doctor tell if you have colon might it be possible that acer by taking blood?
A doctor has provided 1 answer
Usually not: In advanced cases, tumor markers can become elevated, but even then it can also be normal. Sometimes, when colon cancer bleeds heavily enough, doctors can see anemia from blood tests, investigation of which includes evaluation for bleeding from GI tract, which sometimes can be caused by colon cancer.
Answered 11/14/2016
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