Is fasting required for COVID-19 testing? November 22, 2021 13:00 Updated No, fasting is not required for any of our COVID-19 tests. Related articles Can you get RSV more than once? When can I visit the lab for my COVID-19 PCR Test (Labcorp Visit) sample collection? Will I have to pay any additional fees when I visit the lab for COVID-19 PCR Test (Labcorp Visit)? Do I need to fast before testing?