ELISA Antibody-diagnostic


Enzyme-linked immunosorbent assay (ELISA), also known as an enzyme immunoassay (EIA), is a biochemical technique used mainly in immunology to detect the presence of an antibody or an antigen in a sample. In simple terms, in ELISA, an unknown amount of antigen is affixed to a surface, and then a specific antibody is applied over the surface so that it can bind to the antigen. This antibody is linked to an enzyme, and in the final step a substance is added that the enzyme can convert to some detectable signal, most commonly a colour change in a chemical substrate.

Diagnostic can detect the disease, conditions, or infection, is rapidly becoming the key health care. Diagnostic test samples include blood, body fluids and tissues. Diagnostic plays an important role in the diagnosis of disease, treatment of disease and surveillance of disease. It can provide reliable methods to judge the situation of many diseases.