免疫球蛋白(Ig)是具有抗体活性的一种有特殊结构的球蛋白。正常人血清Ig的有关特性可参见表1。常用检测Ig的方法有单向(环状)免疫扩散法(RID)、火箭电泳法(RIE)、免疫比浊法(ITM),均系利用特异抗血清在固相(琼脂或琼脂糖)或液相中,与被测血清中相应Ig反应,形成沉淀环(RID)、沉淀峰(RIE)或浊度(ITM),根据标准曲线计算出所测Ig的含量。 An immunoglobulin (Ig) is a globular protein with a specific structure that has antibody activity. The relevant characteristics of normal serum Ig can be seen in Table 1. Commonly used methods for the detection of Ig are unidirectional (circular) immunodiffusion (RID), rocket electrophoresis (RIE) and immunoturbidimetry (ITM), all using specific antisera on solid phase (agar or agarose) or In the liquid phase, react with the corresponding Ig in the serum to form RID, RIE or ITM, and calculate the Ig content according to the standard curve.