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|Term=CEA assay ...e level of carcinoembryonic antigen (CEA) in the blood. Elevated levels of CEA can be found in the blood of people who have colon or other cancers, certai

...and works by binding to a specific antigen, [[carcinoembryonic antigen]] (CEA), which is often present in high amounts in individuals with colorectal can * [[Immunoscintigraphy]]: A type of imaging test that uses radioactive substances to detect certain diseases in the body.