Monoclonal antibody: The main merit of monoclonal antibody is that use antigen with general purity can get a large number of antibodies with high specificity and uniformity. Because of this advantage, it can be applied to immunological analysis which is characterized by labeled antibodies such as IRM and ELISA. Moreover, it is also beneficial to inside radioimmunoimaging ,immune -directed therapy, protein purification and medical diagnostic testing reagents.

Polyconal antibody: polyclonal antibody has a wider application than monoclonal antibody for its advantages. For example, it can recognize quantities of epitopes; it can causes precipitation reaction; preparation time is short and its cost is low. Those are the basic difference between polyclonal antibody and monoclonal antibody.