COVID-19 is diagnosed using a few different types of tests. Rapid tests look for viral particles and are available to the public, can be self-administered, and provide test results in less than an hour. Lab-based tests are more accurate, but results can take longer to come back. Serum tests can also be used to identify certain antibodies, which indicate if an individual has had a prior infection (or has been vaccinated). [1]
How is COVID-19 diagnosed?
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•Last Updated: May 16, 2025
COVID-19 is diagnosed through various tests, including rapid tests that detect viral particles and provide quick results and more accurate lab-based tests that take longer for results. Additionally, serum tests can identify antibodies to determine whether someone has had a prior infection or vaccination.