The GENFARM 2 IN 1 NASAL & SALIVA Covid-19 RTK Test Kit 25 TEST KITS/ FULL BOX is a rapid antigen test that can be used to detect the presence of the SARS-CoV-2 virus, the virus that causes COVID-19, in nasal or saliva samples. It is a lateral flow immunoassay (LFA) test that is designed for self-use at home.