青海西宁地区系2,260m高原。为了解本地区健康成人C_3的生理状况,我们对457名男性和134名女性共591名正常成人(18～62岁)。进行了C_3水平的调查。被调查者为部队干部、战士和职工,都是经过全面体格检查的健康人,女性还除外妊娠、哺乳和经期者。检测方法采用单向免疫扩散板法。C_3抗血清系我科利用菊糖法免疫兔子而制得,单扩散稀释度为1:200。C_3参考标准采用上海生物制品研究所77—12出品,其含量1mg/ml。 Qinghai Xining region is 2,260m high plateau. To understand the physiological status of healthy adults C_3 in the region, we have 591 men and 134 women in 591 normal adults (18 to 62 years old). A C3 level survey was conducted. The respondents were military officers, soldiers, and workers who were all healthy after a full physical examination. Women were also excluded from pregnancy, breastfeeding, and menstruation. The detection method uses a one-way immunodiffusion plate method. The C_3 antiserum was prepared by immunizing rabbits with inulin in our department with a single diffusion dilution of 1:200. C_3 reference standard used by Shanghai Institute of Biological Products 77-12 production, the content of 1mg/ml.