2017年河北省碘缺乏病实验室外质控网络考核结果分析

Analysis of examination results of external quality assessment network of iodine deficiency disorders laboratories in Hebei Province in 2017

目的评估2017年河北省各级碘缺乏病实验室外质控考核结果及网络运行情况,为碘缺乏病的监测和防治提供可靠的质量保障。方法2017年,对河北省的省、市、县3级碘缺乏病实验室进行外质控考核,其中参加国家尿碘考核的有1个省级、11个市级、128个县级实验室;参加国家水碘考核的有1个省级、11个市级实验室;参加国家盐碘考核的有1个省级、11个市级、30个县级实验室;参加省级盐碘考核的有138个县级实验室。尿碘和水碘采用Z比评分法对检测结果进行统计学评价,Z分值的公议值来自参加全国碘缺乏病实验室考核的所有实验室;盐碘用参考值±不确定度的方法对检测结果进行评价。结果河北省1个省级、11个市级碘缺乏病实验室参加国家尿碘、水碘、盐碘考核,合格率为100.0%(12/12);128个县级碘缺乏病实验室参加国家尿碘考核,合格率为100.0%(128/128);30个县级碘缺乏病实验室参加国家盐碘考核,合格率为100.0%(30/30);138个县级碘缺乏病实验室参加省级盐碘考核,合格率为94.9%(131/138)。结论2017年河北省各级碘缺乏病实验室网络运行状态良好,实验室检测技术保持在较高水平,只有少数县级实验室考核不合格。今后重点任务是加强县级实验室的检测能力。

ObjectiveTo evaluate the results of external quality assessment (EQA) of iodine deficiency disorders laboratories and the network operation in Hebei Province in 2017 in order to further improve the quality of EQA and provide reliable laboratory quality assurance for epidemiological surveillance and control of iodine deficiency disorders.MethodsThe EQA of salt iodine, water iodine and urinary iodine of iodine deficiency disorders laboratories at provincial, prefectural and county levels in Hebei Province in 2017 was evaluated. Among them, there were 1 provincial, 11 prefectural, and 128 county-level laboratories participated in the national urinary iodine assessment;there were 1 provincial and 11 prefectural-level laboratories participated in the national water iodine assessment;1 provincial, 11 prefectural, and 30 county-level laboratories participated in the national salt iodine assessment;and 138 county-level laboratories participated in the provincial-level salt iodine assessment. The testing results of water iodine and urinary iodine of all the participatory laboratories were evaluated by using standard Z score generated from laboratories participated in the examination. The testing results of salt iodine were evaluated by using reference value ± uncertainty.ResultsOne provincial and 11 prefectural-level iodine deficiency disorders laboratories in Hebei Province participated in the national urinary iodine, water iodine and salt iodine assessment, the qualified rate was 100.0% (12/12);128 county-level iodine deficiency disorders laboratories participated in the national urinary iodine assessment, the qualified rate was 100.0% (128/128);30 county-level iodine deficiency disorders laboratories took part in the national salt iodine assessment, the qualified rate was 100.0% (30/30);and 138 county-level iodine deficiency disorders laboratories participated in the provincial-level salt iodine assessment, the qualified rate was 94.9% (131/138).ConclusionsIodine deficiency disorders laboratories in Hebei Province in 2017 have remained at a relatively high level in detection quality, and network operation is good. Only a few county-level laboratories failed to pass the examination. Therefore, the key task in the future is to strengthen the detection capacity of county-level laboratories.