How Long From Exposure To Positive Test. You can be tested earlier. While you could test positive for COVID-19 as soon as two days after exposure false negatives are common early in the 14-day incubation period.
Of course a negative test on Day Four does not mean you are not infected and it would be a good idea to re-test in the next few days but you no longer need to wait until Day Five or Six for an initial test. You can be tested earlier. You do not need to stay at home if.
Massachusetts hasnt implemented that in a formal way Doron said.
A person with COVID-19 is considered infectious starting 2 days before they developed symptoms or 2 days before the date of their positive test if they do not have symptoms. However in some more severe cases contagiousness and symptoms can persist for upwards of 2 weeks. Evidence suggests that testing tends to be less accurate within three days of exposure. COVID-19 tests can detect either SARS-CoV-2 the virus that causes COVID-19 or antibodies that your body makes after getting COVID-19 or after getting vaccinated.
