Retrospective analysis on blood lead measurement results in eaternal quality assessment organized by the Ministry of Health from 2010 to 2014

doi:10.3969/j.issn.1673-8640.2015.02.021

Abstract

Abstract: Objective

To analyze retrospectively blood lead measurement results in external quality assessment (EQA) organized by the Ministry of Health from 2010 to 2014, and to investigate the factors which can stabilize and improve the quality of blood lead measurement in order to provide scientific reference for quality control.

Methods

A total of 35 EQA results in 7 batches from 2010 to 2014 were analyzed by bias, proficiency testing(PT) score and Z score.

Results

The results of bias met the requirements of the Ministry of Health within the range of quality control. The PT score was 100%. The Z score was <2.0 as satisfaction.

Conclusions

The blood lead measurement system of our laboratory is qualified and suitable for determining large-scale samples. The Z score can eliminate the influence of outliers, thus reflects the contestant's levels more comprehensively and objectively. It can be used as a new EQA indicator.

Key words: External quality assessment, Blood lead measurement, Bias, Z score

CLC Number:

R446.1

YU Xiaogang, YAN Chonghuai. Retrospective analysis on blood lead measurement results in eaternal quality assessment organized by the Ministry of Health from 2010 to 2014[J]. Laboratory Medicine, 2015, 30(2): 191-194.

编号	本实验室结果	中位数	偏差	允许范围	评价
201011	70.0	57.9	20.9	17.9~97.9	在控
201012	135.0	133.4	1.2	93.4~173.4	在控
201013	255.0	278.2	-8.3	238.2~318.2	在控
201014	199.0	200.8	-0.9	160.8~240.8	在控
201015	318.0	317.1	0.3	277.1~357.1	在控
201111	80.9	75.0	7.9	35.0~115.0	在控
201112	128.9	122.3	5.4	82.3~162.3	在控
201113	181.1	178.4	1.5	138.4~218.4	在控
201114	232.8	236.7	-1.7	196.7~276.7	在控
201115	303.1	330.1	-8.2	290.1~370.1	在控
201211	75.0	58.9	27.3	18.9~98.9	在控
201212	120.0	142.0	-15.5	102.0~182.0	在控
201213	165.0	155.1	6.4	115.1~195.1	在控
201214	230.0	240.7	-4.5	200.7~280.7	在控
201215	320.0	311.2	2.8	271.2~351.2	在控
201221	100.0	93.8	6.6	53.8~133.8	在控
201222	150.0	178.4	-15.9	138.4~218.4	在控
201223	175.0	175.0	0.0	135.0~215.0	在控
201224	260.0	270.8	-4.0	230.8~310.8	在控
201225	375.0	407.0	-7.9	366.3~447.7	在控
201311	120.0	135.0	-11.1	95.0~175.0	在控
201312	120.0	131.0	-8.4	91.0~171.0	在控
201313	51.0	58.7	-13.1	18.7~98.7	在控
201314	230.0	246.4	-6.7	206.4~286.4	在控
201315	340.0	340.1	-0.0	300.1~380.1	在控
201321	225.0	245.2	-8.2	205.2~285.2	在控
201322	145.0	163.0	-11.0	123.0~203.0	在控
201323	140.0	163.1	-14.2	123.1~203.1	在控
201324	50.0	62.5	-20.0	22.5~102.5	在控
201325	345.0	350.0	-1.4	310.0~390.0	在控
201411	55.0	77.7	-29.2	37.7~117.7	在控
201412	198.0	230.5	-14.1	190.5~270.5	在控
201413	368.0	404.5	-9.0	364.0~445.0	在控
201414	120.0	133.0	-9.8	93.0~173.0	在控
201415	415.0	418.7	-0.9	376.8~460.6	在控
合计	194.2	203.5	-4.6	163.5~243.5

编号	本实验室结果	中位数	偏差	允许范围	评价
201011	70.0	57.9	20.9	17.9~97.9	在控
201012	135.0	133.4	1.2	93.4~173.4	在控
201013	255.0	278.2	-8.3	238.2~318.2	在控
201014	199.0	200.8	-0.9	160.8~240.8	在控
201015	318.0	317.1	0.3	277.1~357.1	在控
201111	80.9	75.0	7.9	35.0~115.0	在控
201112	128.9	122.3	5.4	82.3~162.3	在控
201113	181.1	178.4	1.5	138.4~218.4	在控
201114	232.8	236.7	-1.7	196.7~276.7	在控
201115	303.1	330.1	-8.2	290.1~370.1	在控
201211	75.0	58.9	27.3	18.9~98.9	在控
201212	120.0	142.0	-15.5	102.0~182.0	在控
201213	165.0	155.1	6.4	115.1~195.1	在控
201214	230.0	240.7	-4.5	200.7~280.7	在控
201215	320.0	311.2	2.8	271.2~351.2	在控
201221	100.0	93.8	6.6	53.8~133.8	在控
201222	150.0	178.4	-15.9	138.4~218.4	在控
201223	175.0	175.0	0.0	135.0~215.0	在控
201224	260.0	270.8	-4.0	230.8~310.8	在控
201225	375.0	407.0	-7.9	366.3~447.7	在控
201311	120.0	135.0	-11.1	95.0~175.0	在控
201312	120.0	131.0	-8.4	91.0~171.0	在控
201313	51.0	58.7	-13.1	18.7~98.7	在控
201314	230.0	246.4	-6.7	206.4~286.4	在控
201315	340.0	340.1	-0.0	300.1~380.1	在控
201321	225.0	245.2	-8.2	205.2~285.2	在控
201322	145.0	163.0	-11.0	123.0~203.0	在控
201323	140.0	163.1	-14.2	123.1~203.1	在控
201324	50.0	62.5	-20.0	22.5~102.5	在控
201325	345.0	350.0	-1.4	310.0~390.0	在控
201411	55.0	77.7	-29.2	37.7~117.7	在控
201412	198.0	230.5	-14.1	190.5~270.5	在控
201413	368.0	404.5	-9.0	364.0~445.0	在控
201414	120.0	133.0	-9.8	93.0~173.0	在控
201415	415.0	418.7	-0.9	376.8~460.6	在控
合计	194.2	203.5	-4.6	163.5~243.5

	样品数	PT得分 (%)	当前性能解释	累积性能解释
2010	5	100	满意	*
2011	5	100	满意	*
2012	10	100	满意	成功
2013	10	100	满意	成功
2014	5	100	满意	成功
合计	35	100	满意	成功

	样品数	PT得分 (%)	当前性能解释	累积性能解释
2010	5	100	满意	*
2011	5	100	满意	*
2012	10	100	满意	成功
2013	10	100	满意	成功
2014	5	100	满意	成功
合计	35	100	满意	成功

血铅 (μg/L)	偏差范围 (%)	平均偏差 (%)
0~<100	6.6~29.2	17.9
100~<250	0.0~15.9	7.6
≥250	0.0~9.0	4.2

Retrospective analysis on blood lead measurement results in eaternal quality assessment organized by the Ministry of Health from 2010 to 2014

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[1]	吴宜群. 准确测定儿童血铅水平[J]. 中国实用儿科杂志, 2006,21(3):167-169.
[2]	沈晓明,周建德,高晓岚. 微量血无火焰原子吸收光谱法血铅测定[J]. 微量元素与健康研究, 1994,11(4):43-44.
[3]	余晓刚,颜崇淮,沈晓明,等. 血铅检测质量控制7年回顾分析[J]. 检验医学,2005,20(6):589-590.
[4]	余晓刚,邹向宇,余晓丹,等. 血铅塞曼石墨炉原子吸收光谱法测定[J]. 中国公共卫生,2007,23(10):1278.
[5]	赵海建,张传宝,何法霖,等.常规化学检测项目室间质量评价数据统计新方法探讨[J]. 检验医学,2013,28(7):625-628.

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