对263名正常儿童血清免疫球蛋白作了测定,与国内资料比较,本组结果范围较集中,IgM 下限较高。285名正常儿童同族凝集素测定结果示:(1)年幼儿抗A 滴度并不高于抗B滴度;(2)1岁以下抗A,抗B 滴度的下限标准均为1∶4(或1∶5),1岁以上均为1∶8(或1∶10)。291名正常儿童的抗链球菌溶血素O 的滴度测定结果表明12岁以下儿童均可能呈阴性反应,故不宜作为判断抗原特异性IgG 产生能力的过筛指标。 Serum immunoglobulin was measured in 263 normal children. Compared with the domestic data, the results of this group were more concentrated and the lower limit of IgM was higher. 285 normal children with lectin determination results show: (1) young children anti-A titer is not higher than the anti-B titer; (2) anti-A below 1 years, anti-B titer lower limit of 1: 4 (Or 1: 5), 1 year and older are 1: 8 (or 1:10). 291 normal children anti-streptolysin O titer test results show that children under the age of 12 may have a negative reaction, it should not be used as a screening guide to determine the ability of antigen-specific IgG screening.