Carcinoembryonic Antigen (CEA) appears in serum or fluid of patients with certain kinds of cancer including, but not limited to, colorectal, gastric, pancreatic, lung, and breast carcinomas. CEA will also appear elevated in the bloodstream of those diagnosed with ulcerative colitis, pancreatitis, liver cirrhosis, COPD, Crohn’s Disease, and in smokers. CEA assays are not a reliable diagnosis of cancer, and many types of cancer do not cause elevated levels… More