At Home Test - The earlier an illness is identified, the more probable it is to be treated or controlled successfully. You may be able to minimize your Covid symptoms if you took the PCR test early. And you will be able to reduce the risk of the spread. 

For COVID-19 diagnostic testing, PCR is thought to be the gold standard. PCR is the abbreviation for Polymerase Chain Reaction. It examines the upper respiratory specimen for the presence of COVID-19 viral genetic material using the nasal swab sample. 

A positive test result indicates that you are likely to have come in contact with COVID-19, whereas a negative test result indicates that you did not come in contact with COVID-19 at the time your sample was collected.