Tumor markers, characterized by their presence in malignant tumor cells, are either produced abnormally by malignant tumor cells or by the host's stimulus response to the tumor. Tumor markers exist in the tissues, body fluids, and excreta of tumor patients and can be detected using immunological, biological, and chemical methods. They can be used for tumor screening, diagnosis, differentiation, classification, staging, localization, screening of high-risk populations, and treatment monitoring.

DIA-UP provides Ferritin antigen (Ferr), Pepsin I (PGI), Pepsin II (PG II) and other antigens and paired antibodies, which can meet the development of multi platform diagnostic kits.