Generally, nucleic acid detection takes samples from the nasopharynx or pharynx and sends them to the laboratory for examination within 24 hours after sampling. Professional doctors will judge whether it belongs to the source of infection according to the test results.
The results of nucleic acid testing in COVID-19 can be obtained within half an hour at the earliest, but if a large number of people do nucleic acid testing, the results will generally be obtained within 24 hours.