Immunoassays are based on the principle that a particular antigen will stimulate a very specific (unique) immune response, and proteins (called antibodies) produced through an immune response can be used to detect the presence of a target compound in a sample. Immunoassays are fast and accurate tests used to check biological systems by tracking different proteins and antibodies. Immunoassays rely on the ability of an antibody to bind to a specific molecular structure and can be used to detect specific molecules in the laboratory.
