External quality control assessment results of iodine deficiency disorders laboratories in Yunnan Province in 2023
10.3760/cma.j.cn231583-20240523-00136
- VernacularTitle:2023年云南省碘缺乏病实验室外质控考核结果分析
- Author:
Qianxia GE
1
;
Liangjing SHI
1
;
Hesong WU
1
;
Xu DONG
1
;
Anwei WANG
1
;
Kailian HUANG
1
Author Information
1. 云南省地方病防治所地方病防治科，大理 671000
- Publication Type:Journal Article
- Keywords:
Iodine;
Laboratory;
Quality control
- From:
Chinese Journal of Endemiology
2025;44(1):66-68
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the external quality control assessment results of iodine deficiency disorders (IDD) laboratories at all levels in Yunnan Province, so as to provide technical support for IDD monitoring.Methods:In 2023, all IDD laboratories at provincial, city (prefecture) and county level in Yunnan Province tested the assessment samples randomly provided by the National IDD Reference Laboratory based on their participation in external quality control assessment projects (urinary iodine, salt iodine, water iodine). For laboratories that do not use fully automatic iodine detectors, urinary iodine detection was carried out using the "Determination of Iodine in Urine - Part 1: As 3+-Ce 4+ Catalytic Spectrophotometry" (WS/T 107.1-2016), salt iodine detection was carried out using the direct titration method in the "General Test Methods in Salt Industry-Determination of Iodine"(GB/T 13025.7-2012), and water iodine detection was carried out using the cerium sulfate catalytic spectrophotometry. The test results were evaluated using standard value ± uncertainty. Results:A total of 146 IDD laboratories in Yunnan Province participated in the external quality control assessment, including 1 at the provincial level, 16 at the city (prefecture) level, and 129 at the county level. The feedback rate and qualification rate of urinary iodine, salt iodine in the provincial, city (prefecture) and county level IDD laboratories were all 100% (146/146). The feedback rate and the qualified rate of urinary iodine, salt iodine and water iodine in county level IDD laboratories were all 100%(17/17).Conclusion:In 2023, all external quality control assessment results of IDD laboratories in Yunnan Province are qualified, with stable testing quality, providing reliable laboratory technical support for IDD monitoring.
