Antibody tests look for proteins made by your immune system called antibodies that suggest past coronavirus infection.
Antigen tests have a number of strengths.
Â How long does the Breathalyzer take to give results? Rapid tests come with a high risk of giving a false negative result.
Rapid antigen tests can also result in a false negative if you're tested early in your infection cycle.
There are also a few options for nucleic acid amplification tests that can be used at outpatient clinics and can provide a result in about 20 minutes.
Most people typically get their result the next day, but it can take up to three days.