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目的：探讨胃液中GCA检测对胃癌诊断的意义。方法：采用金标免疫斑点法检测胃液中胃癌相关糖蛋白抗原（GCA），与非胃癌组对照。结果：胃癌组阳性率达80．8％，与对照组有显著性差别（X2＝51．3，P＜0．05）。结论：GCA对胃癌筛查和辅助诊断有参考价值。
Objective: To explore the significance of GCA detection in gastric juice for the diagnosis of gastric cancer. Methods: Gold-labeled immunospot assay was used to detect gastric cancer-associated glycoprotein antigen (GCA) in gastric juice, and it was compared with non-gastric cancer group. Results: The positive rate of gastric cancer was 80.8%, which was significantly different from that in the control group (X2=51.3, P<0.05). Conclusion: GCA has reference value for gastric cancer screening and auxiliary diagnosis.