2012-2016年贵州省碘缺乏病实验室川盐外质控考核结果分析

Analysis on national external quality control results for Sichuan salt in Guizhou Province in 2012 - 2016

目的分析贵州省各级碘缺乏病实验室川盐检测能力和实验室网络运行情况，为碘乏病的监测和防治提供可靠的实验室质量保障。方法收集2012-2016年贵州省参加全国外质控考核的各省、市（州）、县级碘缺乏病实验室川盐考核数据，分析川盐考核结果与给定参考值的相对误差，评价各级实验室川盐检测能力。结果2012-2016年，贵州省省级、7个市（州）级实验室川盐外质控考核连续5年网络反馈率和合格率均为100．00％，省级相对误差绝对值范围为0～4．53％，市（州）级平均相对误差绝对值范围为1．46％～5128％。县级实验室网络反馈率连续5年为100．00％，合格率由2012年的63．64％上升到2016年的100．00％，平均相对误差绝对值范围为1．65％～12．12％。结论贵州省省、市（州）级实验室川盐检测水平和能力相对稳定，县级实验室川盐检测能力逐渐提高，各级盐碘实验室网络运行良好．能为碘缺乏病监测和防治提供有力的实验室质量保障。

Objective To analyze the Sichuan salt detection ability and the network running situation in different centers for disease control （CDC） laboratories of Guizhou Province, and to provide reliable laboratory quality assurance for iodine deficiency disorders prevention. Methods The examination results of external quality assessment （EQA） were collected in 2012 - 2016, and the relative error between Sichuan salt and the given reference value was analyzed. The results of Sichuan salt from all laboratories were evaluated in Guizhou Province. Results In 2012 - 2016, the feedback rate and qualified rate were all 100.00% of the provincial and 7 municipal laboratories. The range was 0 - 4.53% of relative error at provincial level, and the average relative error was 1.46% - 5.28% at prefecture level. At the county level, the feedback rate was 100.00%, and the qualified rate went from 63.64% in 2012 up to 100.00% in 2016, the average relative error was 1.65% - 12.12%. Conclusions The testing ability at provincial and prefecture level laboratories is relatively stable. The testing ability at the county level laboratories has been significantly improved through national laboratory network operation and sustained technical training, and they could provide reliable laboratory quality in prevention of iodine deficiency disorders.