You can test positive after no longer being contagious: https://www.health.com/condition/infectious-diseases/coronavirus/how-long-can-you-test-positive-for-cov

You can test positive after no longer being contagious: https://www.health.com/condition/infectious-diseases/coronavirus/how-long-can-you-test-positive-for-covid-19 https://www.health.com/condition/infectious-diseases/coronav... "You may test positive for as long as three months after having COVID-19" That said, yes 10 days seems much safer as a rule!