What test is currently used to detect donors infected with the AIDS virus?

The test used to detect donors infected with the AIDS virus is the Anti-HIV 1,2 test. This test specifically identifies antibodies produced in response to the Human Immunodeficiency Virus (HIV), which is the virus responsible for AIDS (Acquired Immunodeficiency Syndrome). The presence of these antibodies indicates that an individual has been infected with HIV at some point.

The Anti-HIV 1,2 test is a crucial component of blood screening procedures because it helps ensure the safety of the blood supply. By identifying infected donors, blood banks can prevent the transmission of HIV through blood transfusions.

In contrast, other tests mentioned, such as the Anti-HBc, detect antibodies to the Hepatitis B core antigen and are not related to HIV detection. HBsAg is a marker for Hepatitis B infection, while ALT (alanine aminotransferase) is an enzyme tested to assess liver function but does not specifically screen for any viral infections, including HIV. Therefore, the Anti-HIV 1,2 test is the most appropriate and effective means to identify potential HIV infection in blood donors.