Immunochemistry offers simple, rapid, robust yet sensitive, and in most cases, easily automated methods applicable to routine analyses in clinical laboratories. Immunochemical methods do not usually require extensive and destructive sample preparation or expensive instrumentation. In fact, most methods are based on simple photo-, fluoro-, or luminometric detection. Immunochemical methods have rapidly replaced chromatographic techniques in clinical diagnostics, offering fast detection of antibodies associated with specific diseases, disease biomarkers, hormones, and pharmaceuticals. The assays most often used in clinical immunochemistry involve either quantitative or qualitative formats using enzymelinked immunosorbent assays (ELISAs), immunochromatography in the form of lateral-flow devices like dip-sticks and test strips or Western Blot assays used to interpret data from protein analysis with gel electrophoresis. Similarly, immunohistochemistry, one of the main diagnostics tools in today’s clinical laboratories, is also based on the principles of antigen-antibody binding.