How high is the negative accuracy of Hebei health code display?

The negative accuracy rate of Hebei health code was 100%. For the detected nucleic acid samples, the accuracy of a nucleic acid detection is close to 100%. At present, nucleic acid detection is mainly to extract samples from throat swabs and then detect them in the laboratory through kits. The process is to put a special cotton swab into your throat and take some secretions as samples. In the laboratory, the inspectors separated and extracted the collected samples through the kit and put them into the detection reagent for detection. The final result is negative (no virus detected) or positive (virus detected). The personnel who carry out nucleic acid detection have undergone strict training, and the collection and inspection are up to standard. However, nucleic acid testing is only responsible for this sample. According to the current data, the accuracy of detection samples can be close to 100%. Most infected people in COVID-19 have no symptoms. At this point, the virus is in the incubation period. Before the symptoms appeared, the viral load was very small and nucleic acid could not be detected. It will be more accurate to detect nucleic acid after symptoms appear.