检验医学 ›› 2020, Vol. 35 ›› Issue (5): 487-491.DOI: 10.3969/j.issn.1673-8640.2020.05.020

• 实验室管理·论著 • 上一篇    下一篇

我国新生儿遗传代谢病串联质谱切值调查分析

何法霖1, 林博2, 王薇1, 钟堃1, 袁帅1, 杜雨轩1, 王治国1   

  1. 1.北京医院 国家老年医学中心 卫生健康委临床检验中心/北京市临床检验工程技术研究中心,北京 100730
    2.浙江大学计算机科学与技术学院,浙江 杭州 310013
  • 收稿日期:2019-01-10 出版日期:2020-05-30 发布日期:2020-06-17
  • 作者简介:null

    作者简介:何法霖,女,1981年生,硕士,副研究员,主要从事新生儿筛查质量控制研究。

  • 基金资助:
    国家重点研发计划项目(2017YFC1001700)

Investigation on the cut-off values of tandem mass spectrometry for neonatal inherited metabolic diseases in China

HE Falin1, LIN Bo2, WANG Wei1, ZHONG Kun1, YUAN Shuai1, DU Yuxuan1, WANG Zhiguo1   

  1. 1. National Center for Clinical Laboratories,Beijing Engineering Research Center of Laboratory Medicine,Beijing Hospital,National Center of Gerontology,Beijing 100730,China
    2. College of Computer Science and Technology,Zhejiang University,Hangzhou 310013,Zhejiang,China
  • Received:2019-01-10 Online:2020-05-30 Published:2020-06-17

摘要:

目的 调查中国新生儿遗传代谢病串联质谱16项指标的切值,为切值的设置提供参考。方法 收集141家开展新生儿遗传代谢病串联质谱4项氨基酸和12项酰基肉碱切值的相关信息,包括实验室名称、指标切值、切值来源、方法学原理、仪器、试剂盒校准品及是否修改过切值。分析不同方法学原理和切值来源对16项指标切值的影响。结果 141家临床实验室中,70.18%的实验室切值来源于试剂厂家说明书,约16%切值为实验室确定,约14%切值源于文献报道,49.12%~53.51%的实验室修改过切值;不同检测方法切值差异显著(P<0.05);衍生法切值变异系数为25.26%~172.05%,且未修改过的切值离散程度大于修改过的切值;非衍生法切值变异系数为18.15%~200.92%,除瓜氨酸低值外,其他未修改过切值与修改过切值的离散程度一致。结论 目前中国筛查新生儿遗传代谢病串联质谱16项指标切值差异较大,实验室应进行定期评估和验证。

关键词: 新生儿遗传代谢病筛查, 切值, 氨基酸, 酰基肉碱

Abstract:

Objective To investigate the cut-off values of 16 indicators for screening neonatal inherited metabolic diseases by tandem mass spectrometry in China,and to provide a reference on setting cut-off values for screening neonatal inherited metabolic diseases. Methods The data related to the cut-off values of 4 amino acids and 12 acylcarnitines from 141 neonatal screening laboratories,including laboratory coding,cut-off value,source of cut-off value,methodological principle,instrument,reagent,calibrator,modifying or not,were collected. The effects of different methods and sources of cut-off values on the 16 cut-off values were analyzed. Results A total of 114 laboratories submitted their data. Totally,70.18% laboratories' cut-off values were from reagent manufacturer's instructions,about 16% laboratories' cut-off values were determined by own laboratory,and about 14% laboratories' cut-off values were from literature reports. The proportion of laboratories with modified cut-off values was 49.12%-53.51%. The cut-off values had statistical significance between derivative method and non-derivative method(P<0.05). The coefficient of variation of derivative method was distributed in 25.26%-172.05%,and the dispersion degree of unmodified tangent value was greater than that of modified tangent value. The coefficient of variation of non-derivative method was distributed in 18.15%-200.92%,and the unmodified tangent values were consistent with the dispersion degree of modified tangent values except low citrulline values. Conclusions There are differences in the cut-off value of tandem mass spectrometry in screening neonatal inherited metabolic diseases in China,and the cut-off value should be evaluated and validated regularly.

Key words: Neonatal inherited metabolic disease, Cut-off value, Amino acid, Acylcarnitine

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