How to select virus preservation solution for single collection and mixed collection

Details:

Covid-19 is a standard for COVID-19 infection diagnosis, and is also an effective means to prevent and control the new crown pneumonia epidemic situation. Instruct the mixing test of all parts of COVID-19 to further enhance the nucleic acid detection ability and efficiency. At present, the laboratory uses the technology of "10 in 1 mixed detection" of COVID-19 nucleic acid. However, there are still many people who do not understand the significance of single mining and mixed mining. I will introduce them in detail next.

What do single mining and mixed mining mean

Single collection: as the name suggests, it means that a person's collection swab is put into a collection tube. Mixed collection: put the collection swabs of 5 or 10 people into a collection tube.

When the test result is negative, the mixed samples are regarded as negative, which means that all 10 people are safe. If it is positive, the relevant departments will immediately isolate the 10 subjects of the mixed collection tube temporarily, and re collect the single tube swab for review, so as to determine which of them is positive.

What kind of virus transport media should be selected for mixed collection

Sample preservation solution is mainly used for the preservation and transhipment of virus nucleic acid specimens of upper respiratory tract, such as nasal swabs and throat swabs. In 2020, with the orderly development of the whole nation's efforts to fight against COVID-19, the national epidemic situation was effectively controlled. In order to further improve the ability and efficiency of nucleic acid detection, it effectively meets the epidemic prevention and control needs. In August 19th, the website of the national health and Health Committee issued the notice on Issuing the technical specification for the detection of 10 and 1 mixed metals in COVID-19 nucleic acid. In order to prevent the two infection, it was stipulated that the 6ml inactivated preservation solution was used in mixing matters, and only 3ml could be used in general.

What is the accuracy of mixed mining

The size of single collecting tube and mixed collecting tube is different, and the amount of virus preservation solution is also different. Based on a large number of basic experimental research results and practical operations in the early stage, it is confirmed that the increase of the volume of mixed collection preservation solution has no effect on the detection results of weakly positive samples, so the accuracy is no problem.

Under what circumstances can mixed mining and single mining be used

Single mining: 1 People in key areas (communities with recent outbreaks, including confirmed cases and asymptomatic infections, old communities, densely populated communities, floating population gathering areas and people who have recently left the province), other people who are not suitable for mixed mining. 2. Patients in medical institutions.

Mixed mining: 1 It is used for screening large population samples. 2. It is more suitable when the overall positive rate of the population is low (less than 0.1%).

As a professional manufacturer of virus preservation solution, Desheng can provide inactivated and non inactivated preservation solutions. Of course, whether it is single or mixed preservation tubes, we can recommend the appropriate order quantity according to the customer's detection quantity. If the quantity is large, the price is more favorable. Welcome to inquire!