Enzyme-linked immunosorbent assay is a laboratory diagnostic method based on the antigen-antibody reaction, which allows you to identify substances of a protein nature (including enzymes, viruses, bacterial fragments, and other components of biological fluids).
Polymerase Chain Reaction applies the principles of molecular biology. Its essence lies in the use of special enzymes that repeatedly copy fragments of RNA and DNA of pathogens that are in samples of biomaterial, for example, in blood.
Multicomplex diagnostics is a new area of enzyme-linked immunosorbent assay in which special protein matrices immunochips are used. That allows to determine simultaneously different assays in the test sample.