1. Incorrect personal information may lead to the failure of uploading the nucleic acid test report.
2. The amount of data sampled by the system is huge, which leads to the delay of the results.
3. The health code only shows the results of nucleic acid detection in the last 7 days, and no results of nucleic acid detection before 7 days were found.
4. It is also possible that the results of nucleic acid detection are not displayed on the health code due to the failure of application refresh or poor network conditions.