Besides rapid diagnostic tests, there is also the polymerase chain reaction (PCR) test, also known as the molecular or nucleic-based acid test, as well as the serology or antibody test. PCR tests are the standard form of diagnostic tests for COVID-19 and are conducted through nasopharyngeal swabs of nasal secretions in the nose and throat. While they are generally more accurate than antigen tests, they take much longer to arrive at a precise reading of the test. As such, when time is of the essence, the antigen test is more effective. The antibody test is typically not used to detect the early presence of COVID-19 but is instead used to determine if an asymptomatic individual has the virus or has since recovered.