Analysis on national external quality control results for Sichuan salt in Guizhou Province in 2012-2016 / 中华地方病学杂志

ABSTRACT

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.