Carcinoembryonic Antigen

Alternate Names

  • Tumor Marker

CEA is a protein that is normally found in the stomach and intestinal tissues of an unborn baby. High blood levels are seen in people with colorectal, breast, stomach, liver, and breast cancer. The non-cancerous conditions diverticulitis, cirrhosis of the liver, gallbladder disease, hepatitis, ulcerative colitis, or long-term cigarette smoking may also result in high blood levels of CEA. Blood levels are not used to diagnose cancer, but are used to help determine a prognosis, as an early detection of recurrence, and to monitor how well you are responding to treatment.


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