What is the difference between the serology antibodies test and the PCR test?

BASE10’s COVID-19 tracking and recovery program uses the serology test to tell you if a person has been infected with COVID-19, how long ago they had the infection and if their immune system has produced the antibodies that will protect them from the virus, allowing them to return to work while keeping themselves and others safe. BASE10’s PCR test is used when someone is experiencing symptoms of COVID-19 to determine if they have a current infection