Why does Hunan health code show 36 hours within 48 hours?

It's your nucleic acid test results. Less than 24 hours. 36 hours is your nucleic acid test result. Less than 36 hours. After nucleic acid detection, if it is less than 24 hours, the health code will display the nucleic acid results within 24 hours. If it is more than 24 hours and not more than 48 hours, the 48-hour nucleic acid detection result will be displayed. Show the previous test results before the new test results come out.