检验医学 ›› 2016, Vol. 31 ›› Issue (12): 1087-1092.DOI: 10.3969/j.issn.1673-8640.2016.12.017

• 实验室管理·论著 • 上一篇    下一篇

基于离子色谱技术的血清电解质参考测量程序测定结果的不确定度评定

贾江花1, 屠敏敏1, 沈敏1, 邹继华1, 张曼2   

  1. 1.宁波美康生物参考实验室,浙江 宁波 315104
    2.首都医科大学附属北京世纪坛医院检验科,北京 100038
  • 收稿日期:2016-05-29 出版日期:2016-12-25 发布日期:2016-12-29
  • 作者简介:null

    作者简介:贾江花,女,1985年生,硕士,工程师,主要从事体外诊断试剂的研发工作。

    通讯作者:邹继华,联系电话:0574-88223111。

  • 基金资助:
    宁波市自然科学基金项目(2014A610196)

Uncertainty of serum electrolyte determinations based on ion chromatography as reference measurement procedures

JIA Jianghua1, TU Minmin1, SHEN Min1, ZOU Jihua1, ZHANG Man2   

  1. 1. Reference Laboratory,Ningbo MedicalSystem Biotechnology Co.,Ltd.,Ningbo 315104,Zhejiang,China
    2. Department of Clinical Laboratory,Beijing Shijitan Hospital,Capital Medical University,Beijing 100038,China
  • Received:2016-05-29 Online:2016-12-25 Published:2016-12-29

摘要:

目的 建立一种合理评定基于离子色谱技术建立的血清电解质参考测量程序测定结果不确定度的评估方法。方法 参照JJF1059-1999《测量不确定度评定与表示》、JJF1135-2005《化学分析测量不确定度评定》、CNAS-GL06《化学分析中不确定度的评估指南》,从样本峰面积、标准溶液浓度修正因子、样本处理修正因子和测量重复性4个方面评定2014年参考实验室外部质量评价计划(RELA)-A样本中钠、钾、镁、钙离子测定结果的不确定度。结果 2014年RELA-A样本中钠、钾、镁、钙的水平分别为3 177.79、228.84、48.95、127.01 mg/L,标准不确定度分别为5.66、1.38、0.38、0.75 mg/L,扩展不确定度(k=2)分别为11.33、2.76、0.75、1.50 mg/L。结论 依据国际检验医学溯源联合委员会(JCTLM)推荐的血清电解质参考测量程序建立的测量不确定度评定方法可满足临床实验室对血清电解质参考测量系统的要求。

关键词: 电解质, 离子色谱, 参考测量程序, 不确定度

Abstract:

Objective To establish a method for evaluating the uncertainty of serum electrolyte determinations based on ion chromatography as reference measurement procedures.Methods The uncertainties of sodium,potassium,magnesium and calcium determinations in the External Quality Assessment Scheme for Reference Laboratories in Laboratory Medicine(RELA)-A 2014 sample were evaluated from peak areas of samples,concentration correction factors of standard solution,correction factor of sample processing and measurement repeatability,according to JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement,JJF1135-2005 Evaluation of Uncertainty in Chemical Analysis Measurement and CNAS-GL06 Guidance on Evaluating the Uncertainty in Chemical Analysis. Results The levels of RELA-A 2014 sample were 3 177.79 mg/L for sodium,228.84 mg/L for potassium,48.95 mg/L for magnesium and 127.01 mg/L for calcium. Standard uncertainties were 5.66,1.38,0.38 and 0.75 mg/L. The expanded uncertainties(k=2) were 11.33,2.76,0.75 and 1.50 mg/L,respectively. Conclusions The uncertainty evaluation reference measurement procedure method has been established for serum electrolyte determinations recommended by the Joint Committee for Traceability in Laboratory Medicine(JCTLM),which can meet the requirements of serum electrolyte determinations for clinical laboratories.

Key words: Electrolytes, Ion chromatography, Reference measurement procedure, Uncertainty

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