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床旁HbA1c分析仪的性能评价

By LabMedica International staff writers
Posted on 25 Sep 2015
糖化血红蛋白(HbA1c)水平反应前三个月的平均血浆葡萄糖浓度,在糖尿病的诊断、评估和监控中发挥关键性作用。
立即反馈HbA1c水平对于控制血浆葡萄糖水平高度有效,床旁(POC)设备以快速、便携和便于使用为特征,适于快速反馈HbA1c水平。
Seoul National University College of Medicine(Republic of Korea)的医学实验室科研人员评估了新开发的POC HbA1c分析仪的分析性能。为研究分析仪的检测准确性,研究人员使用两组12份重复新鲜静脉全血样本,确定检测结果相对于国际临床化学家联合会(IFCC)参考目标的偏差,样本含量在33.3mmol/mol-91.3mmol/mol国际系统单位(SI)单位范围内,或在5.2%-10.5%美国国家糖化血红蛋白标准化计划(NSGP)单位范围内。
SD A1cCare分析仪(SD Biosensor,Inc.;Suwon,Korea)使用免疫层析法,通过光学系统检测总血红蛋白和HbA1c水平,并计算HbA1c的百分比。SD A1cCare检测试剂盒使用一种抗HbA1c抗体,这种抗体专门针对血红蛋白A0 β链的糖化氮端的头几个氨基酸残基。科研人员14天内使用SD A1cCare和Variant II Turbo(Bio-Rad Laboratories,Inc.;Hercules,CA,USA)检验了150个残留样本。
SD A1cCare POC HbA1c分析仪显示出卓越的精密度、线性和与Variant II Turbo高效液相色谱(HPLC)的相关性,显示出对IFCC目标的卓越准确性。30、60和90mmol/mol IFCC水平与IFCC目标的偏差分别为-1.95、-1.85和-1.74mmol/mol。依据EP9-A2方案,变异系数为2.6%(SI单位)和1.8%(NGSP单位)。
作者得出结论,SD A1cCare分析仪显示出卓越的精密度、线性、与Variant II Turbo分析仪的相关性,以及相对于IFCC目标的准确性,因此,该分析仪可能适用于POC环境和小实验室的HbA1c含量测定。本研究已发表于2105年6月刊的Clinical Biochemistry(临床生物化学)杂志。

Related Links:
Seoul National University College of Medicine 
SD Biosensor Inc. 
Bio-Rad Laboratories 


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