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对三所全托机构４～５岁儿童共１３２人，在核黄素摄入不同水平时，进行全血谷胱甘肽还原酶活性系数（ＢＧＲＡＣ）、２４小时尿核黄素排出量及负荷尿核黄素排出量测定，结果表明，在进行群体核黄素营养状况评价时，三项指标之间以及与核黄素摄入量之间相关显著且合理，三者可以达到一致结果。但是，ＢＧＲＡＣ比尿核黄素排出量变异小，更为灵敏和准确，在进行核黄素营养状况评价时，尤其是在进行个体评价时，ＢＧＲＡＣ应作为首选指标，尿核黄素排出量应谨慎使用。本文同时提出了上述三项指标进行４～５岁儿童核黄素营养评价时的参考界值。
A total of 132 children aged 4 to 5 years were enrolled in three full-time care institutions. The levels of glutathione reductase (BGRAC), total 24-hour urinary excretion of riboflavin, The results showed that there was a significant and reasonable correlation between the three indicators and the riboflavin intake during the evaluation of the nutritional status of the group riboflavin, and the three results could be consistent. However, BGRAC is less sensitive and accurate than urine riboflavin, and BGRAC should be the first choice when assessing the nutritional status of riboflavin, especially when evaluating individuals. Urinary riboflavin output should be Use with caution. This article also put forward the above three indicators for children aged 4 to 5 riboflavin nutritional reference value.