作者用放射免疫法测定了29例胃癌(GC)、20例慢性萎缩性胃炎(CAG)、41例消化性溃疡(PU)患者胃液和血液癌胚抗原(CEA)浓度,以慢性浅表性胃炎(CSG)作对照;结果表明:胃癌患者胃液中CEA浓度较其它各组显著升高(p<0．05),CAG组胃液CEA浓度较CSG组显著升高(p<0．05),而血液中CEA浓度在各组间无显著差异(p>0．05),说明测定胃液CEA浓度对胃癌有一定辅助诊断价值。 The authors measured the concentrations of gastric carcinoembryonic antigen (CEA) in gastric juice and blood of 29 patients with gastric cancer (GC), 20 patients with chronic atrophic gastritis (CAG), and 41 patients with peptic ulcer (PU) by radioimmunoassay, using chronic superficial gastritis. (CSG) As a control, the results showed that the concentration of CEA in the gastric juice of gastric cancer patients was significantly higher than that of other groups (p<0.05). The concentration of CEA in gastric juice of CAG group was significantly higher than that of CSG group (p<0.05). CEA concentrations in blood were not significantly different between the groups (p>0.05), indicating that CEA concentration in gastric juice has certain diagnostic value for gastric cancer.