Healthline reviewed available at-home tests for Covid-19 – both saliva tests and nasal swabs. They selected 12 “best at-home tests” and give a brief comparison of the tests. Seven of the 12 require sending the sample into a lab. They found 16 tests were authorized by the FDA as of January 2022. Some tests are no longer available, however. The original saliva test was developed by Rutgers. The list was published in May 2022.