为研究全血γ干扰素释放试验（QuantiFERON TB Gold In-Tube test, QFT-GIT)在中国（属结核病高发、BCG高接种地区）成人和儿童中的结核病诊断价值，入组临床怀疑结核病的儿童和成人患者各60例，进行QFT-GIT检测，并收集临床资料作诊断分类。结果显示，在儿童中QFT-GIT诊断结核病的灵敏度为83.87%、特异度为92%、阳性预测值（PPV）为92.86%、阴性预测值（NPV）为82.14%；在成人中诊断结核病的灵敏度为78.57%、特异度为84.62%、PPV为84.62%、NPV为78.57%。结果证实QFT-GIT对结核病具有良好的诊断价值，尤其在儿童中的诊断价值高于成人。

In order to evaluate the diagnostic value of the whole-blood interferon γ release assay (QuantiFERON TB Gold In-Tube test, QFT-GIT) in diagnosis of tuberculosis in children and adults in China (with a high rate of bacillus Calmette-Guérin vaccination and a high incidence of tuberculosis), 60 children and 60 adults with suspected tuberculosis were recruited for QFT-GIT test and clinical information collection. The results showed that among children, the sensitivity of QFT-GIT test was 83.87%, the specificity was 92%, positive predict value (PPV) was 92.86%, and negative predict value (NPV) was 82.14%. While among adults, the sensitivity of QFT-GIT test was 78.57%, the specificity was 84.62%, PPV was 84.62%, and NPV was 78.57%. Here comes a conclusion that QFT-GIT is of great value in diagnosis of tuberculosis, especially among children.