Nasal swab collection method: Wet the swab in normal saline. Measure the distance from the nostril to the base of the ear with a swab and mark it with your finger.

Novel coronavirus pneumonia, which is being launched in February 3, according to the European Union News Agency, is a country that has been in a public situation for more than two years, especially in many countries that are seriously attacked by viruses in Europe and North America.

The PCR laboratory is also called the gene amplification laboratory. PCR is the abbreviation for Polymerase Chain Reaction. It is a molecular biology technique used to amplify specific DNA fragments, which can be regarded as a special DNA replication in vitro.