CCLM:Hevylite测试M蛋白定量

2018-07-05 MedSci MedSci原创

重/轻链(HLC)免疫测定法能够对每种免疫球蛋白(Ig)类别的不同重链/轻链组合进行定量。这使得HLC测定适合于定量单克隆免疫球蛋白(M蛋白)和监测患有单克隆gammopathies的患者。该方法对于那些不可电泳定量M蛋白的样品特别有利。 在这项研究中,我们在166个常规临床样本和27个来自荷兰外部质量评估(EQA)的M蛋白诊断样本(74个参与实验室)中测试了HLC分析的分析性能。通过验证H

/轻链(HLC免疫测定法能够对每种免疫球蛋白(Ig)类别的不同重链/轻链组合进行定量。这使得HLC测定适合于定量单克隆免疫球蛋白(M蛋白)和监测患有单克隆gammopathies的患者。该方法对于那些不可电泳定量M蛋白的样品特别有利。

在这项研究中,我们在166个常规临床样本和27个来自荷兰外部质量评估(EQA)的M蛋白诊断样本(74个参与实验室)中测试了HLC分析的分析性能。通过验证HLC对的总和等于总Ig浓度来评估分析准确度。在与免疫固定电泳(IFE)的直接方法比较中测定HLC测定的灵敏度。

结果显示,27EQA样本中HLC数据与常规Ig诊断的比较显示,多克隆和单克隆IgGIgAIgM的定量具有非常好的相关性(Pearson相关性[r]分别为0.94,0.990.99;斜率为0.94,1.07和分别为0.98)。IFEHLC比率之间的总体一致性很高(93%),Cohenκ系数为0.84。两种检测之间的差异主要是由于IFE检测单克隆性的灵敏度较高所致。

研究结果表明, HLC分析是量化M蛋白的一种准确方法,可以改善β分数中M蛋白的监测,这是使用电泳技术无法进行量化的。

原始出处:

Jacobs, Joannes F.M., Analytical validation of the Hevylite assays for M-protein quantification

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    2018-07-10 lg.zhao
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    2018-07-07 yzh404
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    2018-07-07 yzh404