检验医学 ›› 2018, Vol. 33 ›› Issue (8): 760-763.DOI: 10.3969/j.issn.1673-8640.2018.08.020

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临床实验室多台生化分析仪极差法比对中分析质量要求研究

谢文阁, 李稳, 黄宁, 李金星   

  1. 山东中医药大学附属医院检验科,山东 济南250011
  • 收稿日期:2017-12-10 出版日期:2018-08-10 发布日期:2018-09-07
  • 作者简介:null

    作者简介:谢文阁,男,1967年生,硕士,主管技师,主要从事临床化学检测及临床实验室质量管理工作。

Analytical quality requirement of range comparison for multiple biochemical analyzers in clinical laboratories

XIE Wenge, LI Wen, HUANG Ning, LI Jinxing   

  1. Department of Clinical Laboratory,the Affiliated Hospital of Shandong University of Traditional Chinese Medicine,Jinan 250011,Shandong,China
  • Received:2017-12-10 Online:2018-08-10 Published:2018-09-07

摘要:

目的 比较生物学变异、实验室内长期不精密度及允许变异系数(CV)在极差法比对中的应用确定合适的判断标准。方法 按照WS/T 407—2012制定极差法比对方案。用新鲜血清制作标本,高、低2个水平,在3台生化分析仪上检测19个常规生化项目。结果 19个常规生化项目同一水平的实验室内长期不精密度及合成CV均<允许CV,50%的合成CV>1/3个体内生物变异;每个项目的比对偏差都<允许CV;有50%的比对偏差>1/3个体内生物变异;20%的比对偏差>临界极差。结论 允许CV最适合作为判断标准,但属于异类相比(极差和标准差);中间精密度临界极差是同类相比,但稍严格,作为标准可与允许CV联合使用;1/3个体内生物变异属于异类相比且较严格,不适合作为判断标准。

关键词: 分析质量要求, 极差法比对, 可比性, 精密度, 允许变异系数

Abstract:

Objective To evaluate biological variations,laboratory internal long-term imprecision and allowable coefficient of variation(CV) in range comparison,and to determine appropriate criteria for judgement.Methods According to WS/T 407—2012,the scheme of range comparison was established. With high-level and low-level of patients' fresh sera,19 biochemical items were determined by 3 biochemical instruments.Results For the 19 biochemical items,laboratory internal long-term imprecision and combined CV at the same level were < allowable CV,and 50% combined CV was >1/3 biological variation. Each comparison deviation was < allowable CV,and 50% comparison deviation was >1/3 biological variation. The 20% comparison deviation was > critical range.Conclusions Allowable CV can be used as a criterion for judgement,which is non-congener comparison(range comparison and standard deviation). The critical range belongs to congener comparison,which is strict slightly and can be used as a criterion for the combined usage with allowable CV. 1/3 Biological variation belongs to congener comparison and is too strict to be used as a criterion for judgement.

Key words: Analytical quality requirement, Range comparison, Comparability, Precision, Allowable coefficient of variation

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