Stomach cancer mainly depends on which blood index

Gastric cancer mainly looks at carcinoembryonic antigen (CEA) and carbohydrate antigen 19 - 9 (CA 19 - 9), carbohydrate antigen 72 - 4 CEA is a broad spectrum tumor marker, which may be elevated in patients with gastric cancer, but its specificity is not very high, that is to say, some other diseases may also lead to CEA elevation, so it can not be used as a basis for the diagnosis of gastric cancer alone, but it has certain significance for monitoring and prognosis evaluation of gastric cancer. 2. Carbohydrate antigens 199 (CA 199) Levels of CA 199 may be significantly elevated in patients with gastric cancer, especially with lymph node metastasis or distant metastasis. It also lacks sufficient specificity, but can be used in combination with other indicators to assist in diagnosis and diagnosis. 3. Carbohydrate antigen 724 (CA724) CA724 has certain sensitivity and specificity to gastric cancer, and its elevation may indicate the existence of gastric cancer. However, some benign diseases may also cause its abnormality, so it needs to be judged comprehensively by combining clinical symptoms and other examinations. It should be noted that gastric cancer cannot be diagnosed only by abnormal blood indicators. It also needs to be combined with gastroscopy and pathological biopsy. These blood indicators are mainly used for auxiliary diagnosis of gastric cancer, monitoring treatment effect and evaluating prognosis. In clinical practice, doctors will consider a variety of factors to accurately evaluate and diagnose the patient's condition.