When you swab your nostril with the supplied swab and apply the sample to the test.
X PubMed Central Journal archive from the U.
From February 1st, people travelling to Spain who need to take a Covid-19 test to enter the country will have to get tested within 24 hours before their arrival in the country rather than 48 hours if they choose an antigen test.
Providers conducting antigen tests on either symptomatic or asymptomatic populations must be aware of the potential for false-negative or false-positive results.
Rinse and spit at the end.
Antibody tests, also known as serology testing, detect anti-viral proteins in the blood made by your immune system to neutralize the virus.