Nucleic acid test results are generally within 24 hours.

Specific operation flow of nucleic acid detection

1. Specimen collection: COVID-19 invaded the human body through the respiratory tract, so we need to collect specimens from the respiratory tract. One is to wipe and collect it in the upper respiratory tract with throat swab and nose swab; The other is to collect lower respiratory tract sputum, bronchial lavage fluid and alveolar lavage fluid.

2. Stripping and cracking: The outside of nucleic acid is wrapped by protein shell. It protects viral nucleic acids from being destroyed. After collecting samples, we put them into the cell lysate, peeling off the protein shell of the virus, leaving "streaking" RNA.

3. Replication, replication and re-replication: After RNA fragments are extracted, the fragments are repeatedly replicated and amplified by PCR. Just as we find a special "tag", we can identify the most special piece of information in COVID-19, and then copy and enlarge it repeatedly after identification, and it will be easy to find it after being copied to tens of billions. 4. Fluorescence "visualization": In order to find the viral nucleic acid more conveniently, we add a fluorescent probe to the reaction solution for labeling, and then read the fluorescence intensity with an instrument to get the fluorescence curve. At this time, we can capture the information of COVID-19 virus.