COVID-19 testing - Wikipedia The US CDC's COVID-19 laboratory test kit COVID-19 testing involves analyzing samples to assess the current or past presence of SARS-CoV-2, the virus that causes COVID-19 and is responsible for the COVID-19 pandemic The two main types of tests detect either the presence of the virus or antibodies produced in response to infection [1][2] Molecular tests for viral presence through its
COVID-19 rapid antigen test - Wikipedia COVID-19 rapid antigen tests (RATs) have been widely used for diagnosis of COVID-19 The World Health Organization (WHO) COVID-19 Case Definition states that a person with a positive RAT (also known as an antigen rapid diagnostic test or Antigen-RDT) can be considered a "confirmed case of SARS-CoV-2 infection" in two ways [10] First, the person with a positive Antigen-RDT could meet a
Got a Faint Line on a COVID-19 Home Test? Heres What . . . - AOL Even if it is faint, a positive line result on a rapid antigen COVID-19 test indicates that you are sick and likely contagious For those who are recovering, the opaqueness of the results window