That high-speed port in Caofeidian can be used for nucleic acid.

You can't do nucleic acid at the intersection of highways. You have to go to the hospital to do nucleic acid.

The principle of COVID-19 nucleic acid detection is to detect novel coronavirus nucleic acid by fluorescence quantitative RT-PCR. The patient took samples of nasopharynx, oropharynx, sputum and lower respiratory tract extracts and kept them in special preservation boxes. First, RNA should be extracted, then RNA and reaction system should be configured, and then the configured reaction system should be put into PCR instrument.

In the process of PCR detection, if this sample contains novel coronavirus, DNA will be synthesized, and the instrument will detect the fluorescence signal, indicating that novel coronavirus nucleic acid is positive. If there is no COVID-19 DNA in the sample and no fluorescence signal is detected during the reaction, it is reported as a negative result.