免疫散射比浊法检测 IgG 的性能验证

摘要

目的：对免疫散射比浊法检测 IgG 的分析性能进行验证，探讨适用于该系统性能验证的合理模式。方法参照相关文件及标准，对该系统检测 IgG 的精密度、正确度、分析测量范围（AMR）和参考区间进行验证。结果低值样本批内精密度为2.24％，总精密度为2.25％；高值样本批内精密度为2.73％，总精密度为2.68％；检测不同批号配套校准品的相对偏倚为5.18％；初始稀释度 AMR 为2.44～33.5g／L；参考区间与厂家声明一致。结论该系统测定 IgG 的主要分析性能均与厂家声明的性能一致；厂家提供的参考区间可以接受，验证方案和统计方法简便、可操作性强。%Objective To test and verify the performance of analyzing IgG using nephelometry assay,and discuss reasonable model of performance verification of this system.Methods According to related documents and standards,this study verified the precision,accuracy,assay measurement range(AMR)and reference interval.Results The within-run precision in low level was 2.24%,while it was 2.73% in high level.The overall precision in low level was 2.25%,while it was 2.68%.The relative bias between the results of analyzing the calibrator with a different lot from that used for calibrating and its concen-tration printed was 5.18%.The AMR of the original dilution was 2.44~33.5 g/L.The results of reference interval verifica-tion identified with what the manufactur declares.Conclusion The major performances of analyzing IgG by this system are identifies with the manufactur declares.The reference interval offered by the manufactur is acceptable.The verification and calculation methods are simple and convenient,with strong operability.