Can you have a negative home test after 9 days?

Yes, you can have a negative home test after 9 days. It is possible for a person to test negative on a rapid antigen test nine days after potential exposure to the virus, even if they are still infected. Antigen tests are less sensitive than PCR tests and may not always detect the virus in the early stages of infection. Additionally, the timing of the test in relation to the timing of the exposure can affect the results. It is recommended that people who have symptoms or have been exposed to a known case of COVID-19 but have a negative antigen test result should consider repeating the test in a few days or get confirmatory result by a RT PCR test.