a desert in NW India and S Pakistan. About 77,000 sq. mi. (200,000 sq. km). Also called Great Indian Desert.
HIV tests are used to detect the presence of the human immunodeficiency virus (HIV), the virus that causes acquired immunodeficiency syndrome (AIDS), in serum, saliva, or urine. Such tests may detect antibodies, antigens, or RNA.
If there arenât enough antibodies created by the body when the test is given, the result will be negative despite the person being infected with HIV. In order for an HIV antibody test to detect an HIV infection, two conditions must be met: HIV antibodies must be present in the personâs blood.