The time it takes to get the results of an HIV test varies depending on the test. Generally, the results of the HIV antibody test can be obtained on the same day; if the test is a highly sensitive HIV viral load test, it will take a little longer.
Usually the HIV test is done by blood sampling, and there is no significant correlation between blood sampling and food intake, so the results are usually available on the same day. Of course, if the test is a high-sensitivity HIV load test, or an HIV load test, it may take longer because not many patients choose that test, and the testing center may need to get a certain number of specimens together before testing. If the test is a confirmatory test for HIV, it may take 2-3 days to get the results.
Usually, the HIV test at the hospital is the initial screening test, and if the result is suspected positive, further testing at the CDC is required. The CDC test results usually take about 10 days to come out.