What is the window period when referring to HIV infection 2?

The window period of modern laboratory HIV tests is 45 days. The window period of rapid, point-of-care tests and self-tests is 90 days.

Is HIV-1 and 2 the same?

The human immunodeficiency virus is classified into two main types: HIV-1 and HIV-2. HIV-1 was discovered first and is more prevalent worldwide, while HIV-2 is less pathogenic and is mostly confined to West Africa.

What is the accurate window period for HIV?

An antigen/antibody test performed by a laboratory on blood from a vein can usually detect HIV infection 18 to 45 days after an exposure. Antigen/ antibody tests done with blood from a finger prick can take longer to detect HIV (18 to 90 days after an exposure).

How long does the window period lasts?

It takes time for the body to make antibodies after it is exposed to HIV, and different people make antibodies at different rates. The window period for antibody tests is between 3 weeks and 3 months. Up to 95\% of people will have antibodies after 6 weeks, and 99\% of people will have antibodies after 3 months.

What is the difference between incubation period and window period?

Window Period The time between when a person is exposed to a bacteria or virus and when a test can accurately detect organism. Incubation Period The time elapsed between exposure to a bacteria or virus and when symptoms and signs are first apparent.

What is the window period for an HIV test?

The window period varies from person to person and depends on the type of test used to detect HIV. Ask your health care provider or test counselor about the window period for the test you’re taking. A nucleic acid test (NAT) can usually tell you if you have HIV infection 10 to 33 days after an exposure.

How long does HIV take to show up on a blood test?

99\% of HIV-infected individuals would be detectable within 57 days of exposure. However, those estimates were based on testing plasma. In practice, tests are usually done on fingerprick blood or oral fluid and the window period is likely to be several days longer.

What is an example of a second generation HIV test?

As these two substances are detectable sooner after HIV infection than IgG antibodies, second-generation tests have longer window periods. Examples include OraQuick Advance Rapid HIV 1/2, Clearview HIV 1/2 STAT-PACK and SURE CHECK HIV 1/2.

What are the different types of HIV tests?

There are three types of tests available: nucleic acid tests (NAT), antigen/antibody tests, and antibody tests. HIV tests are typically performed on blood or oral fluid.