Water-Soluble Phospholipid Polymers as a Novel Synthetic Blocking Reagent in an Immunoassay System

For detecton or quantification of an analyte (a very small amount of physiological activity matter), immunological measurements can be effectively used. In the immunological measurements, the enzyme-linked immunosorbent assay (ELISA) method for the measurement of antigen using an immobilized antibody and antibodies conjugated with enzyme (enzyme-antibody conjugate) is known as a sandwich immunoassay technique [1-2]. This method’s principle, presented in Figure 1, is very widely used because it can be applied easily with high sensitivity.