The speed at which you can receive the results from a COVID-19 test depends on the type of test performed, such as a serology test, antibody test, or molecular test. Rapid tests, which use a form of serology or antigen testing, are available within a matter of minutes, typically 10 to 15. Other types of tests, typically those that must be sent to a lab for analysis, take much longer, generally 24 to 72 hours (one to three days).