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This At-Home COVID Test May Detect 90% of Asymptomatic Omicron - SELF "Within 48 hours of your first onset of symptoms, the probability that an antigen test will test positive and agree with PCR is about 90%," Dr. Tromberg explained. Experts urge people who have symptoms of or have been exposed to the virus to take multiple antigen tests, over a period of several days, to increase the odds of detecting an infection. "It's Darwinian evolution in action, so it's just a bad break and it's going to happen eventually if we all wait around long enough," Hafer said. The stealth variant has many mutations in common with standard Omicron, but it lacks a particular genetic change that allows lab-based PCR tests to be used as a rough and ready means of flagging . Jan 10 (Reuters) - The fast-spreading Omicron variant has made us more reliant on rapid at-home antigen tests to tell us if we have COVID-19. However, PCR tests will still pick up if and when a patient is infected with SARS-CoV-2. The technique you use in administering a rapid test to yourself or someone else also matters a great deal. There are reports that the omicron variant of the coronavirus may be less severe than previous versions. The NIH's RADx validation core team is continually evaluating tests as new variants crop up to make sure that they can still accurately detect the virus, Tromberg said. Its also recommended to keep distance from others in public spaces, even outdoors. Among PCR tests, there are also some speculations regarding which type of test is more accurate. That's . The majority of tests used by commercial and public health labs can detect SARS-CoV-2, but they can't confirm which version of the virus is present. The, Centers for Disease Control and Prevention. In January 2021, the FDA warned that some authorized molecular tests were at risk of being negatively affected by future variants. "People need to be safely tested," said Toher. This test converts RNA of the virus sample into DNA and amplifies it repeatedly to make millions of copies of this DNA so that the test can detect its presence. Prior to the emergence of the omicron variant, studies found that at-home antigen tests have a lower sensitivity than PCR tests for detecting SARS . The COVID-19 Omicron variant has rapidly spread throughout the world, and many countries have focused on evolving their testing guidelines in order to ensure safety amidst such a massive outbreak of the virus. This test is much more comfortable and easy to perform on people because it does not result in any irritating reactions or responses. Hershey responds to backlash over Womens Day campaign featuring Black Vietnam vet at last getting his due: Medal of Honor.