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目的：了解全寄宿制小学生核黄素营养状况，并探讨核黄素营养评价指标。方法：对某寄宿制小学6~8岁儿童核黄素摄入情况进行膳食调查，并对全血谷胱甘肽还原酶活性系数（BGRAC）及负荷尿核黄素排出量进行测定。结果：被调查对象核黄素营养状况不良，膳食中核黄素摄入量偏低，尚不足营养素供给量（RDA）的70％。实验室检查，BGRAC缺乏率为54％，负荷尿核黄素排出量缺乏率为53％，两结果趋于一致。结论：进行群体核黄素营养状况评价时，负荷尿核黄素排出量仍不失为评价指标之一。
OBJECTIVE: To understand the nutritional status of riboflavin in all boarding students and to evaluate the evaluation of riboflavin nutrition. Methods: A dietary survey was conducted on riboflavin intake in a boarding primary school children aged 6-8 years. The whole blood glutathione reductase activity coefficient (BGRAC) and the release of riboflavin in urine were measured. Results: Riboflavin was not in good nutritional status and the intake of riboflavin in the diet was low, less than 70% of the nutrient supply (RDA). Laboratory tests showed a 54% rate of BGRAC deficiency and a 53% rate of loss of riboflavin load, both of which tended to be consistent. CONCLUSIONS: When evaluating the nutritional status of the group of riboflavin, the discharge of riboflavin in urine is one of the evaluation indexes.