Carcinoembryonic antigen (CEA)
Carcinoembryonic antigen (CEA) is a glycoprotein that normally occurs in fetal gut tissue. After birth, its detectable levels in serum essentially disappear. Howerer, CEA may increase in the presence of various disorders such as colon cancer, liver cancer and lung cancer. CEA is a tumor-associated antigen which is expressed largely in gastrointestinal tract tumors. The Carcinoembryonic Antigen Rapid Test is a rapid chromatographic immunoassay for the qualitative detection of CEA in whole blood, serum or plasma. It is intended as an aid in the assessment and diagnosis of colorectal cancer and other types of cancers, such as pancreatic, stomach, breast, lung, and certain types of thyroid and ovarian cancer.