CLIN CHEM LAB MED:血清IgG4水平的变化和不准确是由于IgG亚类检定缺乏标准化?

2019-11-03 MedSci MedSci原创

IgG

通常在IgG4相关疾病(IgG4- rd)的诊断检查中对血清IgG4进行定量分析。根据最近的文献,IgG4值高于1.35 g/L是IgG4- rd的特征,并在最初表现时支持其诊断。本研究的目的是评估两种主要的商用IgG4检测(Siemens Healthineers和结合位点)的可比性和准确性。

通常在IgG4相关疾病(IgG4- rd)诊断检查中对血清IgG4进行定量分析。根据最近的文献,IgG4值高于1.35 g/LIgG4- rd的特征,并在最初表现时支持其诊断。本研究的目的是评估两种主要的商用IgG4检测(Siemens Healthineers和结合位点)的可比性和准确性。

研究人员选取血清IgG4升高的样本,对IgGIgG亚型进行比较。此外,还用纯化的多克隆和单克隆IgG4制剂评估了这两种方法的准确性。

研究数据显示,用于测量IgG4IgG3的两种IgG亚类分析存在显著差异,IgG3的差异较小。两家主要的商用IgG4检测供应商之间缺乏标准化,导致检测结果存在显著差异,这可能会导致不必要的临床检查。

因此,本研究的结论是,在评估患者是否患有IgG4- rd时,应该采用血清IgG4特异性判定区间,而不是不依赖于测定的IgG4单临界水平(例如1.35 g / L)。 迫切需要针对IgG亚类的国际认可的认证参考材料,并鼓励测定制造商采取步骤,以实现IgG4和其他IgG亚类的标准化测量。

原始出处:

Luca BernasconiEsther MundwilerVariable and inaccurate serum IgG4 levels resulting from lack of standardization in IgG subclass assay calibration

本文系梅斯医学(MedSci)原创编译整理,转载需授权!

 


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    2019-11-04 一天没事干

    很好的学习机会

    0

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