2. Regarding whether to do nucleic acid testing, citizens who have done nucleic acid testing within the first three days after receiving the text message and the results are negative may not repeat the testing. For example, citizens who have not done nucleic acid testing within three days are advised to do nucleic acid testing in time. If the result is negative this time, they won't have to do it again. Three. Nucleic acid detection expenses According to the requirements of the Notice on Further Strengthening the Safeguard of Nucleic Acid Detection for Persons with Yellow Health Code issued on15/0, those who receive the short message will be tested free of charge when their health code is yellow. If their health code is green, please test it according to the published charging standard. At the same time, the reporter also called the mayor's hotline 12345 for consultation. The staff said that after receiving the text message, if you don't know the situation, you should report it to your community in time.