Is the nucleic acid detection method reliable? The National Health and Health Commission responded

, June 28 (Xinhua) -- Wuhan and Beijing have adopted so-called mixed testing methods recently when conducting nucleic acid testing for the public. Is this method reliable? The National Health and Safety Commission on the 28th in the official micro-blog response, "mixed inspection" has two modes, "mixed sampling" will not affect the sensitivity of nucleic acid detection;
, there are two modes of "mixed inspection". One is to sample several people, such as 3 or 5 people, after sampling, put into the same sampling tube, this mode is also called "mixed sampling" or "mixed sampling", Beijing most of the time using this mode, and the other is in the laboratory test, 3 or 5 people of the samples taken the same volume mixed together, also known as "sample mixing." From a scientific point of view, the first "mixed" mode, will not affect the sensitivity of nucleic acid detection, the verse will be mixed sample detection mode, the detection sensitivity has a certain impact, but the degree of impact is known.
National Health Commission pointed out that in the field sampling, such as the use of "mixed", it is important to pay attention to orderly arrangements, such as a group of 5 people, each holding their own bar code, sampling each person, the person bar code attached to the sampling tube, so as to effectively avoid the problem of sampling may be confused. In the process of analysis, such as the use of "sample mixing" mixing scheme, in the mixing of 5 samples, but also pay attention to the sample mixing process, there may be sample mixing problems.
National Health Commission said that mixed inspection greatly improved nucleic acid detection capabilities, for example, now Beijing's daily detection capacity is more than 200,000, the use of this combination mode, can make the daily detection capacity without increasing human and material resources, can reach more than 2 million. It should be emphasized that for fever clinic patients with symptoms, close contacts and other high-risk groups of detection, or should be single-take single-check. For screening of low-risk populations, mixed screening can be preferred.