On June 9, the press conference of the joint prevention and control mechanism of the State Council focused on the content related to nucleic acid detection. Many statements were widely concerned by the media. It is not necessary for people in low-risk areas to carry out frequent nucleic acid testing. How can nucleic acid testing be carried out scientifically? From Zhengzhou to Hefei, and from Shanghai to Beijing, there have been many cases of violation of laws and regulations by nucleic acid testing institutions. How can the quality and safety be guaranteed? In this column of news 1+1, Bai Yansong connects with LiJinMing, deputy director of the clinical testing center of the National Health Commission, to pay common attention to: how should nucleic acid testing be carried out? How can nucleic acid detection be more safe and of high quality? The quality of nucleic acid detection is the focus of attention recently. On June 9, at the press conference of the joint prevention and control mechanism of the State Council, it was mentioned that the third-party detection institutions need to meet the requirements of biosafety level II or above to carry out nucleic acid detection. The third-party testing institution is also a medical institution, which should be approved by the health administration department at or above the municipal level in accordance with relevant regulations. At the same time, in large-scale nucleic acid screening, experts should be assigned to the laboratories that undertake the testing task. Multi site normalized nucleic acid detection was adjusted from 48 hours to 72 hours How to treat it? LiJinMing, deputy director of the clinical laboratory center of the National Health Commission: from the perspective of the incubation period of Omicron virus infection, the average incubation period is about 3 days, so the setting of 72 hour nucleic acid detection frequency should be considered from the perspective of cost and benefit. I think 72 hours is more scientific, that is, in the normal prevention and control of epidemic situation, how to do not affect the effective control of the spread of the epidemic, and how to take care of the people without affecting their lives and work, so as to consider from the perspective of less impact. (outlook new era)