Polymerase Chain Reaction (PCR) tests are used to directly screen for the presence of viral RNA, which will be detectable in the body before antibodies form or symptoms of the disease are present. This means the tests can tell whether or not someone has the virus very early.
During Covid-19 PCR testing, substances known as reverse transcriptase or DNA polymerase are added to a nasopharyngeal sample at the lab. These substances work to make numerous copies of any viral RNA that may be present. This is so that enough copies of the RNA are present to signal a positive result, as specifically designed primers and probes attach themselves to sequences of the genetic code of the virus to signal that a pathogen has been found.
- Standard PCR Test: Results available in 24 Hours. Test result certificates issued for travel.
- Rapid PCR Test: Results available in 2-4 hours. Test result certificates issued for travel.