What is HIV-1/2 antigen antibody?
Reactive HIV-1/-2 antigen and antibody screening test results suggest the presence of HIV-1 and/or HIV-2 infection, but it is not diagnostic for HIV infection and should be considered preliminary. A reactive result does not differentiate among reactivity with HIV-1 p24 antigen, HIV-1 antibody, and HIV-2 antibody.
What is HIV-1 and 2 antibody test?
The HIV antibody test advised by the CDC is the HIV-1/2 antigen/antibody combination immunoassay test. If you test positive for HIV, the CDC advises the following follow-up tests: HIV-1/HIV-2 antibody differentiation immunoassay. This test is to confirm HIV and find out if you have HIV-1 or HIV-2.
What is HIV-1/2 antigen and antibodies 4th generation?
HIV-1/2 Antigen and Antibodies, Fourth Generation, with Reflexes – This test is used to help diagnose HIV-1 and HIV-2 infection, including acute infection, and to differentiate HIV-1 from HIV-2. It is consistent with the HIV diagnostic algorithm proposed by the Centers for Disease Control and Prevention [2].
What is HIV-1 and 2 antibody test non reactive?
A nonreactive result means that the fluid sample did not contain HIV antigens or antibodies that the test aims to react to at the time of testing. It can mean a person has tested negative for HIV. However, if an individual has a nonreactive result, it does not necessarily mean they do not have HIV.
What is a reactive HIV-1/-2 antigen test?
Reactive HIV-1/-2 antigen and antibody screening test results suggest the presence of HIV-1 and/or HIV-2 infection, but it is not diagnostic for HIV infection and should be considered preliminary. A reactive result does not differentiate among reactivity with HIV-1 p24 antigen, HIV-1 antibody, and HIV-2 antibody.
How do antigen/antibody tests for HIV work?
Antigen/antibody tests are recommended for testing done in labs and are now common in the United States. This lab test involves drawing blood from a vein. There is also a rapid antigen/antibody test available that is done with a finger prick. HIV antibody tests only look for antibodies to HIV in your blood or oral fluid.
What is HIV-1 and HIV-2?
It detects the HIV antigen called p24 plus antibodies to HIV-1 and HIV-2. (HIV-1 is the most common type found in the United States, while HIV-2 has a higher prevalence in parts of Africa.)
How do HIV-1/HIV-2 antibodies bind to antigens?
HIV-1 p24 antigen and HIV-1/HIV-2 antibodies present in the patient’s specimen bind to the HIV-1 antigen, HIV-2 antigen, and HIV-1 p24 monoclonal (mouse) antibody-coated microparticles. After washing, the bound HIV-1 p24 antigen and HIV-1/HIV-2 antibodies bind to the acridinium-labeled conjugates.