At-home antigen tests for detecting the SARS-CoV-2 virus offer rapid results, allowing individuals to quickly determine their infection status. These tests typically involve a nasal swab sample applied to a test card or cassette. A visual indicator, such as a colored line or band, signals the presence or absence of viral antigens. Positive results suggest an active infection, while negative results indicate a lower likelihood of current infection. A control line or band confirms the test’s validity.
Rapid antigen tests gained significant prominence during the COVID-19 pandemic, providing accessible and timely diagnostic information. The ability to perform these tests at home empowered individuals to make informed decisions about isolation, seeking medical care, and protecting others from potential exposure. This decentralized testing approach contributed to public health surveillance efforts by increasing testing capacity and facilitating quicker identification of infection clusters. The speed and convenience of these tests are particularly valuable in time-sensitive situations, such as pre-travel or pre-event screening, where rapid results are crucial.
