Several Covid-19 tests exist, and they all function much the same manner in attempting to determine if the result is positive or negative. This does not imply that there is doubt regarding either approach. This only indicates that variety is used to address the same issue in a way that is practical and accessible to either individuals or groups. Generally speaking, testing is a crucial step in monitoring and essentially restricting the transmission of COVID-19 to and from individuals. There are many types of testing, from those done in labs to those done at home. While some tests concentrate on blood or saliva, others concentrate on samples of mucus. This, in turn, raises the question of which test is the best or not.