Found programs: National Natural Science Foundation of China ( No . 22176132) ; Shenzhen Medical Research Fund (No . B2403008) ; Project of Shenzhen Science and Technology Innovation Commission (No . JCYJ20210324135000001) ; Guangdong Medical Science Research Fund (No . A2023276)
Authors：Zhou Chenyu1 , 2 , Chen Yang2 , 3 , Zhu Lu1 , 2 , Kong Lingquan2 , Zhuo Lan2 , Wang Zhou2 , Luo Xianru2 , Song Jiayi2 , Zhang Jianqing1 , 2 , 3
Keywords：iodine deficiency disorders; iodine nutrition; children; thyroid volume; salt iodine; urinary iodine;
DOI：10.19405/j.cnki.issn1000-1492.2025.12.017
〔Abstract〕 Objective To investigate the iodine nutrition status of children aged 8-10 in Guangming, Longhua and Yantian District of Shenzhen in 2023, and to explore the influencing factors of thyroid volume. To evaluate prevention strategies and to provide a scientific basis for the elimination of iodine deficiency disorders. Methods Urine and household salt samples were randomly collected from 580 non-boarding students aged 8-10 years foriodine content detection. Thyroid volume was measured using a fully digital ultrasound imaging system, and goiter prevalence was calculated. Results A total of 580 samples was tested. The median salt iodine concentration was 23.86 mg/kg, with 93.62% qualified iodized salt and 94.48% coverage rate. The median of urinary iodine was 265.00 μg/L, mainly distributed between 200--4, P