ELISA
ELISA-Enzyme-linked immunoassay-, which is a very
important diagnostic method in many of the diseases.
This ELISA uses the components of the immune system and
chemical substance to detect the immunological changes or
response in the body. It involves the immunological molecules either
the antibody or antigen. The main aim of the usage of ELISA
involves the detection of substances that have antigenic properties,
i.e., proteins. Hence, the ELISA detects hormones, bacterial
antigens and antibodies.
This ELISA can be used to identify either the antigen or the
antibody. There are three types of ELISA available. They are indirect
ELISA, sandwich ELISA and the competitive ELISA.
These ELISA very helpful in detecting serum antibody levels for HIV
and west Nile virus. It can also be used in food industry to detect
food allergens or it can be used in toxicology screening.