4. Immunoassays are tests that use antibody and
antigen complexes to measure the presence of
specific analyte in a sample.
It have two major types that are as follows,
competitive and noncompetitive
immunoassay.
ELISA is the technique which depends on
principle of immunoassay.
5. Enzyme linked immunosorbent assay i.eELISA
are the quantitive immunological procedures
in which the antigen-antibody reaction is
monitered by enzyme measurements.
The term first used by Engvall and Perlman in
1971.
It is first screening test commonly use for HIV.
