The AGID test is the agar gel immunodiffusion test and ELISA is the enzyme-linked immunosorbent assay. Both test for the presence of certain proteins (called antigens) by binding them with antibodies.
The ELISA test is usually the first test given; quick results and inexpensive. See the related link.
Western Blot Test: is a blood test that produces more accurate results than the ELISA test.
There is only one test that can give the accurate results for HIV. The only test that can do this would be the Elisa test.
elisa
An Elisa Test is used to test for a substance using antibodies for colour change. The test has been used in medicine and plants. Performing the test involves using an antibody and enzymes.
western blot test
The western blot test
Yes, it is possible for a person to test positive for the Elisa test but negative for the Western blot test for certain conditions.
antigen
The first test licensed for HIV testing was the ELISA test in 1985. ELISA detects antobodies to the HIV virus, which indicates that the person has been exposed to the virus.
In direct ELISA, the primary antibody is directly linked to an enzyme for detection, while in indirect ELISA, a secondary antibody linked to an enzyme is used to detect the primary antibody bound to the antigen. Direct ELISA is quicker and more straightforward, but indirect ELISA allows for signal amplification and detection of multiple antibodies bound to the antigen.
ELISA