A1 - AT是急性时相反应蛋白 ,可作为非特异的肿瘤反应物 ,在恶性肿瘤时明显增加。国内外有不少文章报道其正常参考值 ,但对儿童参考值报道较少。本文旨在探讨 α1 - AT的儿童正常参考值 ,对儿童感染、恶性肿瘤等疾病的诊断有临床意义 ,现将方法及结果报告如下。1　研究对象儿童 A1 - AT is an acute phase reaction protein that acts as a nonspecific tumor response, with a marked increase in malignancy. Many articles at home and abroad reported their normal reference values, but reported less on children’s reference values. The purpose of this paper is to investigate the normal reference value of children with α1 - AT, which is of clinical significance in the diagnosis of children ’s infections and malignant tumors. The methods and results are reported as follows. 1 study children