52例具有上消化道症状的患儿皆行快速尿素酶试验、~(13)C-尿素呼气试验、血清HP-IgG三种检测,以同时二种(或以上)检查方法一致的结果作为诊断幽门螺杆菌(HP)是否存在的标准。上述三种方法的敏感性、特异性、准确率、阳性预测值、阴性预测值是与诊断标准结果比较而计算得到,并且对其给予评价。结果显示:三种检测方法诊断HP的敏感性、特异性等均接近或高于90％。 52 cases of children with upper gastrointestinal symptoms were rapid urease test, ~ (13) C-urea breath test, serum HP-IgG three kinds of tests, with the same two (or above) the same test results as Diagnostic criteria for the presence of Helicobacter pylori (HP). The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of the above three methods are calculated and compared with the diagnostic criteria results, and evaluated. The results showed that the sensitivities and specificities of the three detection methods for diagnosing HP were all close to or higher than 90%.