It is unclear exactly how long someone can test positive for COVID-19 after having the disease. Some studies suggest that it is possible to test positive for up to 3 months after having the disease, while other studies suggest that it is possible to test positive for up to 6 months. However, it is important to note that these studies are ongoing and the results are not definitive. Additionally, it is unclear if a positive test result after having COVID-19 indicates that the person is still contagious or if they are simply testing positive for antibodies.