Evaluation on efficiency of 4 kinds of γ-interferon release assay detection kits for diagnosis of pulmonary tuberculosis / 国际检验医学杂志

ABSTRACT

Objective To evaluate efficiencies of 4 kinds of γ‐interferon release assay(IGRA) detection kits in diagnosis of pul‐monary tuberculosis .Methods 4 kinds of IGRA reagents produced by Oxford Immunotec Ltd (Oxford) in British ,Shanghai Fuxing Changzheng Medical Science Co .,Ltd(Fuxing) ,Cellectis in Australia(Cellectis) and Haikou VTI Biological Institute(VTI) ,respec‐tively ,were used to determine release levels of peripheral bloodγ‐interferon which had antigenicity of Mycobacterium tuberculosis in 86 cases of patients with tuberculosis and 80 cases of healthy individuals ,and diagnostic efficiencies were evaluated .Results Among the 4 kinds of IGRA reagents ,including Oxford ,Fuxing ,Cellectis and VTI ,the sensitivity was 93 .02% ,88 .37% ,90 .70% and 91 .86% ,respectively ;the specificity was 92 .50% ,75 .00% ,82 .50% and 87 .50% ,respectively ;the positive predictive value was 93 .02% ,79 .17% ,84 .78% and 88 .76% ,respectively ;the negative predictive value was 92 .50% ,85 .71% ,89 .19% and 90 .91% ;the diagnostic accordance rate was 92 .77% ,81 .93% ,86 .75% and 89 .76% ,respectively ;the area under receiver operating charac‐teristic(ROC) curve was 0 .975 ,0 .892 ,0 .958 and 0 .963 .Conclusion There are no significant differences among Oxford ,Fuxing , Cellectis and VTI reagents ,and reagents could be selected according to clinical requirements .