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对北京地区０～１３岁健康儿童２８５名进行血清２５（ＯＨ）Ｄ水平测定，均值为（５７．５±１９．８）ｎｍｏｌ／Ｌ。同时对２５名乳儿肝炎患儿血清２５（ＯＨ）Ｄ水平测定，其均值为（２２．５±１７．４）ｎｍｏｌ／Ｌ，明显低于健康儿童，说明血清２５（ＯＨ）Ｄ是一个敏感的生化指标，对儿科临床诊断有一定的参考价值。
Serum 25 (OH) D levels were measured in 285 healthy children aged 0 ~ 13 years in Beijing with an average of (57.5 ± 19.8) nmol / L. At the same time, the serum 25 (OH) D levels in 25 infantile hepatitis patients were (22.5 ± 17.4) nmol / L, which were significantly lower than those in healthy children, indicating that serum 25 (OH) D was a sensitive Biochemical indicators of pediatric clinical diagnosis has some reference value.