检验医学 ›› 2019, Vol. 34 ›› Issue (11): 1032-1037.DOI: 10.3969/j.issn.1673-8640.2019.11.016

• 实验室管理·论著 • 上一篇    下一篇

GUF评定血清TB参考测量程序测量不确定度初探

周卫平1, 戴绘芬2, 陶赟3, 王惠民3(), 王建新3, 季伙燕3, 陈峰4   

  1. 1.南通市通州区人民医院检验科,江苏 通州 226300
    2.海安县中医院检验科,江苏 海安 226600
    3.南通大学附属医院检验科,江苏 南通 226001
    4.南通出入境检验检疫局,江苏 南通 226001
  • 收稿日期:2019-04-20 出版日期:2019-11-30 发布日期:2019-12-05
  • 作者简介:null

    作者简介:周卫平,男,1973年生,硕士,副主任技师,主要从事免疫、分子生物学和实验室质量管理研究。

  • 基金资助:
    南通市科技计划指导项目(yyz15009)

Evaluation on the uncertainty of TB reference measurement procedure by GUF

ZHOU Weiping1, DAI Huifen2, TAO Yun3, WANG Huimin3(), WANG Jianxin3, JI Huoyan3, CHEN Feng4   

  1. 1.Department of Clinical Laboratory,Tongzhou People's Hospital,Nantong 226300,Jiangsu,China
    2.Department of Clinical Laboratory,the Traditional Chinese Medical Hospital of Haian County,Nantong 226600,Jiangsu,China
    3.Department of Clinical Laboratory,the Affiliated Hospital of Nantong University,Nantong 226001,Jiangsu,China
    4.Nantong Entry and Exit Inspection and Quarantine Bureau,Nantong 226001,Jiangsu,China
  • Received:2019-04-20 Online:2019-11-30 Published:2019-12-05

摘要:

目的 探讨基于《测量不确定度表示指南》(简称GUM)的不确定度框架法(GUF)评定Doumas血清总胆红素(TB)参考测量程序测量结果不确定度的可行性。方法 应用国际检验医学溯源联合委员会(JCTLM)推荐的Doumas血清TB参考测量程序,对国际临床化学和检验医学联合会(IFCC)参考实验室外部质量评价计划(RELA)样本进行测定,分析测量结果各不确定度分量来源,同时对各分量分别进行评定,计算相对合成不确定度、标准不确定度和扩展不确定度。结果 2014年RELA-A和RELA-B样本TB浓度分别为67.33、31.99 μmol/L,相对合成标准不确定度分别为1.57%、1.61%,标准不确定度分别为1.06、0.52 μmol/L,扩展不确定度(取95%可信区间,k=1.96)分别为2.07、1.01 μmol/L。结论 利用GUF评定血清TB参考测量程序测量结果不确定度的方法可满足临床实验室对血清TB参考测量系统的要求。

关键词: 总胆红素, 血清, 参考测量程序, 测量不确定度评定, GUM不确定度框架法

Abstract:

Objective To evaluate the uncertainty of Doumas total bilirubin(TB) reference measurement procedure by Guide to the Expression of Uncertainty in Measurement(GUM)uncertainty framework(GUF). Methods The sample of the International Federation of Clinical Chemistry and Laboratory Medicine(IFCC) External Quality Assessment Scheme for Reference Laboratories in Laboratory Medicine(RELA) was determined by Doumas TB reference measurement procedure of the Joint Committee for Traceability in Laboratory Medicine(JCTLM). The sources of each uncertainty component in the whole procedure were identified. The evaluation of uncertainty components was processed,and a relative combined uncertainty was calculated. Finally,standard uncertainty and expanded uncertainty were given. Results The concentrations of TB of 2014 RELA-A and RELA-B samples were 67.33 and 31.99 μmol/L. The relative combined standard uncertainties were 1.57% and 1.61%. The standard uncertainties were 1.06 and 0.52 μmol/L. The 95% confidence interval was taken,the coverage factor(k)was 1.96,so the expanded uncertainties were 2.07 and 1.01 μmol/L. Conclusions The uncertainty of TB by reference measurement procedure by GUF can meet the requirements of clinical laboratory.

Key words: Total bilirubin, Serum, Reference measurement procedure, Measurement uncertainty evaluation, Guide to the Expression of Uncertainty in Measurement uncertainty framework

中图分类号: