检验医学 ›› 2021, Vol. 36 ›› Issue (3): 259-262.DOI: 10.3969/j.issn.1673-8640.2021.03.006

• 检验医学参考测量系统的研究与应用专题 • 上一篇    下一篇

apo A1和apo B侯选参考方法在室间质量评价中的应用价值

李卿, 居漪(), 唐丽萍, 金中淦, 孙贺伟   

  1. 上海市临床检验中心,上海 200126
  • 收稿日期:2020-07-19 出版日期:2021-03-30 发布日期:2021-03-30
  • 通讯作者: 居漪
  • 作者简介:居漪,E-mail:juyi@sccl.org.cn
    李卿,男,1981年生,硕士,副主任技师,主要从事医学参考测量工作和质谱蛋白质定量研究。

Application of candidate reference method of apolipoprotein A1 and apolipoprotein B in external quality assessment

LI Qing, JU Yi(), TANG Liping, JIN Zhonggan, SUN Hewei   

  1. Shanghai Center for Clinical Laboratory,Shanghai 200126,China
  • Received:2020-07-19 Online:2021-03-30 Published:2021-03-30
  • Contact: JU Yi

摘要:

目的 探讨载脂蛋白(apo)A1和apo B的候选参考方法在室间质量评价(EQA)中的应用价值。方法 以5个水平的冰冻人血清制品作为EQA质评物,采用免疫透射比浊法(ITA)检测。采用同位素稀释液相色谱串联质谱(ID-LC-MS/MS)定量技术对EQA样本进行定值,包括变性、烷基化和胰蛋白酶酶解处理,使用C18色谱柱分离,质谱采用正离子模式和多反应监测定量。结果 有340家实验室使用ITA进行检测。apo A1项目,EQA2~EQA4 ID-LC-MS/MS结果均低于ITA的中位数;EQA1和EQA5 ID-LC-MS/MS结果高于ITA的中位数;Apo B项目,除EQA4外,其他ID-LC-MS/MS结果均低于ITA的中位数。结论 采用ID-LC-MS/MS技术的候选参考方法在基于靶值的评价中具有一定的应用价值。

关键词: 载脂蛋白A1, 载脂蛋白B, 候选参考方法, 室间质量评价

Abstract:

Objective To investigate the application of candidate reference method of apolipoprotein(apo) A1 and apo B in external quality assessment(EQA). Methods Five levels of frozen human serum products were used for EQA samples. Immunoturbidimetry (ITA)was used for the detection. EQA samples were quantified by isotope dilution liquid chromatography-tandem mass spectrometry(ID-LC-MS/MS). Samples underwent denaturing,alkalization and tryps in digestion,and were then separated by C18 column and quantified by positive ion mode and multiple reaction monitoring. Results ITA was used in 340 participants. As for apo A1,ID-LC-MS/MS gave values lower than the median of ITA for EQA2-EQA4,but not for EQA1 and EQA5. As for apo B,except EQA4,all ID-LC-MS/MS values were lower than the median of ITA. Conclusions Candidate reference method based on ID-LC-MS/MS can offer application value of assessment based on target value.

Key words: Apolipoprotein A1, Apolipoprotein B, Candidate reference method, External quality assessment

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