The HIV antibody test ELISA (Enzyme-immunosorbent).
Absolute CD4 lymphocyte count (less than 200 in case of illness).
PCR for HIV.
The test for HIV infection in an individual was created with a technique of “ELISA” (enzyme-linked immunosorbent assay). It is done in a few hours and is very sensitive in identifying HIV-positive. Most commercial tests are compared for their quality and reliability with a more sophisticated technique called “Western blot” that characterizes each marker to improve its performance.
Also performed the cell counts to determine the involvement of the immune system, and since 1995 he began to develop a technique (PCR, English acronym Chain Reaction Polymerase) that can measure the amount of HIV virus in the blood , which in turn is a reflection of the amount of virus that exist throughout the body.
