检验医学 ›› 2015, Vol. 30 ›› Issue (3): 284-286.DOI: 10.3969/j.issn.1673-8640.2015.03.020

• 实验室管理·论著 • 上一篇    下一篇

同型半胱氨酸不同检测方法结果分析

赵彦, 康凤凤, 王薇, 何法霖, 钟堃, 王治国   

  1. 北京医院卫生部临床检验中心,北京 100730
  • 收稿日期:2014-06-09 出版日期:2015-03-30 发布日期:2015-04-16
  • 作者简介:null

    作者简介:赵 彦,女,1988年生,学士,技师,主要从事医学检验实验室管理工作。

  • 基金资助:
    北京市自然科学基金资助项目(7143182)

Result analysis of various detection methods for homocysteine

ZHAO Yan, KANG Fengfeng, WANG Wei, HE Falin, ZHONG Kun, WANG Zhiguo   

  1. National Center for Clinical Laboratory, Beijing Hospital, Ministry of Health, Beijing 100730, China
  • Received:2014-06-09 Online:2015-03-30 Published:2015-04-16

摘要: 目的

评价并分析同型半胱氨酸(Hcy)项目不同检测方法的结果。

方法

采用卫生部临床检验中心(NCCL)的室内质量控制(IQC)监测系统调查分析全国110家实验室Hcy检测项目的不精密度水平[即变异系数(CV)]。再利用NCCL基于Web的室间质量评价(EQA)系统评估2012年全国110家实验室Hcy检测的偏倚(Bias)。引入我国目前的EQA评价标准(TEa=20%)进行评价,并通过公式西格玛(σ)=(TEa-Bias)/CV计算项目的σ度量值。同时评价各方法组实验室的及格率和实验室间CV

结果

从σ水平、实验室间的不精密度水平以及 EQA及格率三方面对Hcy不同检测方法的结果进行分析,化学发光法σ>6、3<σ≤6、0<σ≤3、σ≤0的比例分别为0%、7.69%、30.77%、61.54%,免疫比浊法分别为9.09%、0%、63.64%、27.27%,循环酶法分别为11.63%、31.40%、47.67%、9.30%。化学发光法、免疫比浊法、循环酶法5个批号质控品的实验室间CV分别为33.66%~43.77%、19.54%~25.24%、10.46%~14.21%,及格率分别为53.3%、53.3%~80.0%、85.9%~92.3%。

结论

我国Hcy的检测水平还有待提高。

关键词: 同型半胱氨酸, 六西格玛, 西格玛度量, 不精密度, 偏倚

Abstract: Objective

To evaluate the results of various detection methods for homocysteine (Hcy).

Methods

The internal quality control (IQC ) information of 110 laboratories from National Center for Clinical Laboratory (NCCL) was collected. The imprecision [coefficient of variation (CV)] of Hcy was analyzed. Bias was estimated according to various detection methods in NCCL External Quality Assessment (EQA) in 2012 through online EQA platform. With current evaluation criteria for EQA(TEa=20%), sigma (σ) value of each laboratory was calculated as the formula: σ= (TEa-bias)/CV. Furthermore, the passing rates and inter-laboratory CV for each group were evaluated.

Results

The proportions of σ>6, 3<σ≤6, 0<σ≤3 and σ≤0 by chemiluminescence, immunoturbidimetry and enzymatic cycling were 0%, 7.69%, 30.77%, 61.54%;9.09%, 0%, 63.64%, 27.27% and 11.63%, 31.40% 47.67%, 9.30%, respectively. The inter-laboratory CV by the 3 methods for 5-run quality control materials were 33.66%-43.77%, 19.54%-25.24% and 10.46%-14.21%, and the passing rates were 53.3%, 53.3%-80.0% and 85.9%-92.3%.

Conclusions

Laboratories in China need further efforts to improve the performance of Hcy detection.

Key words: Homocysteine, 6 sigma, Sigma metric, Imprecision, Bias

中图分类号: