Carbohydrate antigen 724 antibody (CA)

Carbohydrate antigen 724 antibody (CA) is one of the laboratory markers for detecting gastric cancer and various digestive tract cancers, which is also a non-specific tumor marker. The increase of this index does not mean that you have a tumor. It is mainly found in the gastrointestinal tract. It has a high sensitivity to gastric cancer, ovarian mucinous cystadenocarcinoma and non-small cell lung cancer, and also has a certain sensitivity to biliary system tumors, colorectal cancer, pancreatic cancer, etc.

Tumor marker is a chemical substance that reflects the existence of tumor. They may not exist in normal adult tissues but only in embryonic tissues, or their content in tumor tissues is much higher than that in normal tissues. Their presence or quantitative change can suggest the nature of tumors, so as to understand the histogenesis, cell differentiation and cell function of tumors, so as to help the diagnosis, classification, prognosis judgment and treatment guidance of tumors.