The value of carcinoembryonic antigen CEA is normal, can you rule out cancer

CEA

is a tumor marker, and changes in CEA can help diagnose colon cancer, gastric cancer, and benign diseases such as gastrointestinal polyps and pancreatitis. If the cancer has low specificity for CEA, it may lead to normal or slightly elevated CEA values. Therefore, even if CEA is normal, it cannot completely rule out the possibility of cancer. Also, even if CEA is elevated, cancer is not always present. Therefore, further diagnosis by imaging and pathology is required.