摘要目的:分析青海省各级碘缺乏病实验室外质控考核情况，为碘缺乏病监测和防治效果评价提供质量保障。方法:对2013 - 2018年青海省的省、市（州）、县3级碘缺乏病实验室尿碘、盐碘和水碘外质控考核结果（来源于国家碘缺乏病参照实验室下发的各年度考核结果通报）进行描述性分析。其中，每年参加尿碘考核的有1个省级、8个市（州）级、43个县级（2017、2018年）实验室；参加盐碘考核的有1个省级、8个市（州）级、30个县级（2017、2018年除外，为43个）实验室；参加水碘考核的有1个省级、8个市（州）级实验室。结果:2013 - 2018年，参加尿碘外质控考核的省、市（州）级实验室反馈率和合格率均为100.0%，县级实验室（2017、2018年）反馈率均为100.0%、合格率分别为93.0%（40/43）和88.4%（38/43）；盐碘考核的省、市（州）级实验室反馈率和合格率均为100.0%，县级实验室反馈率均为100.0%、合格率除2014年外均> 90.0%；水碘考核的省、市（州）级实验室反馈率均为100.0%，省级实验室合格率均为100.0%，市（州）级实验室除2016年（7/8）外均为100.0%。结论:青海省碘缺乏病实验室质控网络已全面覆盖到所有市（州）和县级实验室，省、市（州）级实验室尿碘、盐碘、水碘检测水平稳定可靠，个别县级实验室检测能力仍有待提高。

abstractsObjective:To analyze the assessment results of the external quality control in iodine deficiency disorders laboratories at all levels in Qinghai Province so as to provide quality assurance for monitoring and control effect evaluation of iodine deficiency disorders.Methods:The results of urinary iodine, salt iodine, and water iodine quality control assessments at the provincial, city (state) and county-level iodine deficiency disorders laboratories were analyzed in Qinghai Province from 2013 to 2018 (sourced from the annual evaluation results issued by National Reference Laboratory for Iodine Deficiency Disorders). Among them, there were 1 provincial, 8 city (state) and 43 county-level (2017, 2018) laboratories participated in the urinary iodine assessment; 1 provincial, 8 city (state) and 30 county-level (43 in 2017 and 2018) laboratories participated in the salt iodine assessment; 1 provincial and 8 city (state)-level laboratories participated in the water iodine assessment.Results:From 2013 to 2018, the feedback rates and qualified rates of provincial and city (state)-level laboratories participated in the urinary iodine external quality control assessment were 100.0%; the feedback rates of 43 county-level laboratories (2017 and 2018) were 100.0%, and the qualified rates were 93.0%(40/43) and 88.4%(38/43), respectively. The feedback rates and qualified rates for salt iodine assessment in provincial and city (state)-level laboratories were 100.0%; the county-level laboratories feedback rates were 100.0%, and the qualified rates were > 90.0% except for 2014. And the feedback rates of provincial and city (state)-level laboratories for water iodine assessment were 100.0%; the qualified rate of provincial-level laboratory was 100.0%, and the city (state)-level laboratories were 100.0% except 2016 (7/8).Conclusions:The quality control network of Qinghai Province's iodine deficiency disorders laboratories has fully covered all city (state) and county-level laboratories. Provincial, city (state)-level laboratories have stable and reliable levels of urinary iodine, salt iodine, and water iodine; some individual county-level laboratories testing capabilities still need to be improved.