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目的了解县级碘缺乏病实验检测能力,评估常规盐碘检测工作质量,以建立良好的外部质量体系。方法由国家碘缺乏病参照实验室提供盲样对河南省2008年30个县盐碘实验室进行外质控监测考核。采用直接滴定法测定盐碘含量。结果28个实验室被判定为合格,不合格者其相对误差>10%。结论93.3%的县级实验室掌握了盐碘测定方法。不合格实验室要多方面查找原因,尽快消除检测过程中的系统误差和随机误差。
Objective To understand the experimental detection ability of iodine deficiency disorders at county level and evaluate the quality of routine salt iodine detection in order to establish a good external quality system. Methods Blind samples were provided by the National Reference Laboratory for Iodine Deficiency Disorders (LIDI). The external quality control tests were conducted on salt iodine laboratories in 30 counties of Henan Province in 2008. Determination of salt and iodine content by direct titration. Results 28 laboratories were judged to be qualified, those who fail the relative error of> 10%. Conclusion 93.3% of county-level laboratories have mastered the method of salt iodine determination. Unqualified laboratories to find the reasons in many ways, as soon as possible to eliminate the system error and random errors in the testing process.