Carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5) is a glycoprotein found on the surface of cells and is primarily associated with cancers of the gastrointestinal tract, including colorectal cancer. CEACAM5 is mostly used as a tumor marker for monitoring colorectal cancer but is also sometimes used to screen for other cancers, including lung cancer, pancreatic cancer, gastric cancer, and breast cancer. Signosis’ Human CEACAM5 ELISA kit can accurately measure CEACAM5 levels in human samples and provides a human CEACAM5 protein standard for quantitative analysis.