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化学发光检测系统测定总甲状腺素的正确度研究 被引量:2

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摘要 目的通过3种化学发光检测系统与参考方法[同位素稀释液相色谱串联质谱法(ID-LC-MS/MS)]的比对,了解不同检测系统测定甲状腺素(T4)的正确度。方法分别采用参考方法及3种化学发光检测系统[cobas e601全自动电化学发光免疫分析仪及配套试剂(简称e601)、ARCHTECT i2000SR化学发光免疫分析仪及配套试剂(简称i2000SR)、IS1200全自动化学发光测定仪及配套试剂(简称IS1200)]平行测定40例新鲜人血清样本,对结果进行线性回归和偏移分析,评价3种检测系统检测T_4的正确度。结果 e601、i2000SR、IS1200与参考方法的线性回归方程分别为Y=0.958 2X+3.76、Y=0.747 7X+11.21、Y=0.992 5X+10.59,r^2分别为0.963 9、0.967 1、0.969 0,结果均为可接受。单个样本的相对偏移e601仅有1例超出限值,平均相对偏移为-0.83%;IS1200有2例超出限值,平均相对偏移为5.83%,偏移结果均为可接受;而i2000SR有27例超出限值,平均相对偏移为-15.24%,结果为不可接受。结论 e601和IS1200的正确度良好,而i2000SR虽然与参考方法的相关性较好,但出现较明显的系统偏移。
出处 《检验医学》 CAS 2018年第7期629-632,共4页 Laboratory Medicine
基金 "十三五"国家重点研发计划项目(2017YFF0205401)
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