Fourth generation assays detect both HIV antibody and p24 antigen whereas third generation assays detect HIV antibody only. Which one of the following statements regarding HIV serological diagnostic tests is correct? HIV fourth generation assays are more sensitive and less specific than third generation assays. Detection of P24 antigen by Background The recent approval of 4th generation HIV tests has forced many laboratories to decide whether to shift from 3rd to these tests. There are limited published studies on the comparative evaluation of these two different assays. We compare the performance of fourth-generation electrochemiluminescence immunoassay (ChIA) and third-generation enzyme linked immunosorbent assay (EIA) for Types of HIV Tests. Rapid HIV Test - This type of test is useful for regular testing and is for those who want instant results from their evaluation. Such a test deliver results in few minutes after testing the blood specimen. The accuracy level of the test is as high as that of a Standard test and if in case, an individual tests negative Home HIV and STIs HIV testing What's involved in testing for HIV? Testing for HIV is a simple and pain-free process. It involves giving a small sample of blood or swab from your mouth. Your results will be confidential (kept private). The healthcare provider will explain the process and answer any questions you have. They are there to help you. HIV testing NYC, New York Rapid, Accurate and Confidential. All types of HIV testing: rapid HIV testing, early detection, antigen and antibody tests. Ideal time for HIV testing; HIV third-generation test: IgG, IgM: 22 days after exposure; 50% accuracy; 99% accurate 50 days after exposure: HIV fourth-generation: IgG, IgM + p24: The following different types of tests are used commonly in commercial HIV testing: Types of tests Elisa test (3rd generation) Tests for antibodies only Combo test (4th generation) - Tests for antibodies and antigen -The antigen component shortens the window period P-24 AG test Tests for antigen only HIV tests are very accurate, but no HIV test can detect HIV immediately after a person gets the virus. Some kinds of tests detect HIV sooner than others. In general, nucleic acid tests (NAT) can detect HIV the soonest, followed by antigen/antibody tests, and then antibody tests. Most rapid tests and self-tests are antibody tests. Most tests have the highest accuracy when they are given 3 months after exposure. 3rd generation antibody tests are the most common and require a blood sample that is tested at a lab. 4th generation antibody/antigen tests can detect HIV within just 1 month of exposure. Results from these tests take a few days to a few weeks, but they are highly The median (interquartile range) window period for third-generation tests was 22 days (19-25) and 18 days (16-24) for fourth-generation tests. The probability of a false-negative result is 0.01 at 80 days' post-exposure for third-generation tests and at 42 days for fourth-generation tests. Introduction. In 2014, Centers for Disease Control and Prevention (CDC) and the Association of Public Health Laboratories (APHL) issued updated HIV testing recommendations for laboratory diagnosis of HIV in the United States (US) [].The revised guidelines recommend use of Food and Drug Administration (FDA)-approved HIV tests with improved detection of acute HIV-1 infection, as well as HIV-2. xGDd.