The main screening test for gastric cancer is an intubation gastroscopy, which usually costs about $200. There are other items that can be done for gastric cancer screening, such as upper gastrointestinal imaging and tumor markers CEA and CA724 (glycoantigen 724) and CA199 index. Generally, the cost of upper gastrointestinal tract imaging is also $100-200, and the tumor marker test is usually about $80 per marker. However, other imaging tests, including tumor markers, cannot fully confirm the diagnosis of gastric cancer, only gastroscopy is the most visual and clear. Only gastroscopy is the most intuitive and clearest. Depending on the region and hospital, the cost may vary, but generally the difference is not too big. Early detection and early treatment of gastric cancer are generally more effective. For early gastric cancer, it is mainly treated by surgery and post-surgery can be combined with adjuvant chemotherapy and other comprehensive treatments.