The invention relates to a dual-recognition immunoassay for the detection of antibodies specific to a target antigen in a sample which comprises contacting said target antigen with a sample suspected of containing said antibodies specific to said target antigen under conditions allowing the formation of an antigen-antibody complex; adding a conjugate comprising said target antigen and a marker under conditions allowing the formation of an antigen-antibody-antigen/marker complex; and detecting said antigen-antibody-antigen/marker complex. The immunoassay can be used, among other applications, in the diagnosis of infections caused by pathogenic organisms with high sensitivity and specificity.
本发明涉及一种用于检测样品中目标抗原特异性
抗体的双重识别免疫分析法,该方法包括在允许形成抗原-
抗体复合物的条件下,将所述目标抗原与疑似含有所述目标抗原特异性
抗体的样品接触;在允许形成抗原-
抗体-抗原/标记复合物的条件下,加入由所述目标抗原和标记物组成的共轭物;以及检测所述抗原-
抗体-抗原/标记复合物。除其他应用外,该免疫测定法还可用于诊断由病原体引起的感染,并具有高灵敏度和特异性。