测定循环免疫复合物(CIC)对某些疾病的诊治和发病机理的研究有重要意义。检测CIC的方法已有几十种之多。仅WHO等推荐的方法即有Clq法、固相胶固素法、类风湿因子法、Raji细胞法~([1～6])。这些方法虽有许多优点,但试剂来源困难,操作复杂,难于在临床实验室作为常规开展。国内目前广泛应用的聚乙二醇(PEG)沉淀试验,其特异性也较差。我们利用CIC中Ig可以与金黄 Determination of circulating immune complexes (CIC) for the diagnosis and treatment of certain diseases and the pathogenesis of research is of great significance. There are dozens of ways to test CIC. Only WHO and other recommended methods that have Clq method, solid gel method, rheumatoid factor method, Raji cell method ~ ([1 ~ 6]). Although these methods have many advantages, but the source of reagents is difficult, complex operation, it is difficult to conduct routine in the clinical laboratory. Currently widely used polyethylene glycol (PEG) precipitation test, its specificity is also poor. We use CIC Ig can be golden