What is it used for?Flu tests are used to help figure out whether you have the flu. Flu tests are also sometimes used to:Figure out whether an outbreak of respiratory illness in a community, such as a school or nursing home, has been caused by the flu.Identify the type of flu virus that is causing infections. There are three main types of flu viruses: A, B, and C. Most seasonal flu outbreaks are caused by the A and/or B flu viruses.
