What does Index Value in HIV test mean?

The “index value” (also called the “signal-to-cutoff ratio”) is a technical term having to do with how this type of HIV-antibody test is conducted. Values less than 0.90, like yours, are definitively negative! Values between 0.9 and 1.0 would be equivocal or borderline.

What is HIV 1/2 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 positive and HIV-2 negative?

Positive HIV-1 antibody, but negative HIV-2 antibody results, indicates the presence of HIV-1 infection.

What does nonreactive mean?

Nonreactive vs. 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.

What does reference range non-reactive mean?

Your STD test results may indicate “reactive,” “not-detected,” “non-reactive” or a reference range. Not detected and non-reactive mean the STD was not detected in your system. The reference range indicates whether the STD value is high enough to be considered positive; if not, it returns negative.

How do I read my STD test results?

What does it mean if a reference range is negative?

For example, a healthy person’s test result would not detect COVID-19, so the reference range would be “negative” or “not detected.” If your test result shows a value of “positive” or “detected,” that falls outside of the reference range and would be considered abnormal or atypical.

What is difference between negative and non-reactive?

Nonreactive vs. 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 positive abnormal test result?

Positive or abnormal, which means the disease or substance was found. Inconclusive or uncertain, which means there wasn’t enough information in the results to diagnose or rule out a disease. If you get an inconclusive result, you will probably get more tests.