Not Detected Results For Covid. You have not been infected with COVID-19 previously. You had COVID-19 in the past but you did not develop or have not yet developed detectable antibodies.
Some test results may. This means that the virus was not found in your sample. A negative result does not rule out COVID-19 and should not be used as the sole.
A technical measure of the smallest amount of virus they can detect.
O Quarantine can end after Day 7 if you do not have symptoms and if you test negative by PCR or antigen test after Day 5. However it is possible for this test to give a negative or not detected result that is incorrect false negative in some people with COVID-19. It takes time for the coronavirus to replicate to a critical mass for a swabbing test to detect it. If they die they are not counted as a COVID-related death.