This invention describes a process for immuno-chemical quantitative determination of immunologically active substances. The method involves a first incubation of a sample containing the active substance with a labelled binder, which contains an antibody or antibody fragment. After complexing has taken...http://www.google.com.tw/patents/US4670383?utm_source=gb-gplus-share專利 US4670383 - Immune-chemical measurement process for haptens and proteins