With the outbreak of the epidemic in various places, in order to strictly control the epidemic without stopping work, it seems to be the norm for many people to inspect every two days and every three days. There is even a saying that "no inspection today, no work tomorrow". The cost of such a large-scale detection is huge. Therefore, the mixed sampling detection method appears, which can not only ensure the demand of sampling, but also greatly reduce the test cost of high-capacity virus media.
Mixed sampling includes five mixed samples, ten mixed samples and twenty mixed samples, that is, five or 10 or 20 samples are placed in the same virus sampling tube for unified testing. If the test result is negative, this batch is negative; If the test result is positive, these people will be isolated and tested separately to find positive cases. In large-scale sampling, mixed sampling screening is more efficient and can detect the results of multiple individuals at the same time, with lower cost. In case of mixed sampling, the requirements for personnel information registration are stricter. It is necessary to ensure that the samples correspond to the information of the inspected personnel, and that all samples in the sampling tube are immersed in the virus preservation solution. Therefore, the amount of virus preservation solution required varies with different methods of mixed collection.
| Sampling method | Volume of non inactivated virus preservation solution | Volume of inactivated virus preservation solution |
| Single mining | 3ml | 3ml |
| Five mixed with one | 5ml | 5ml |
| Ten mixed with one | 6ml | 6ml |
| Twenty mixed with one | 12ml | 12ml |
In addition to mixed production, there is also mixed inspection. After single production, a part of the preservation solution is mixed with different objects, and then tested. The second kind of "mixed test": put the collected throat swabs in their respective sample containers, and then take a certain amount of preservation solution of equal volume from their respective sample tube species for mixing. The purpose of this test is to directly test and check the single sampling tube of the mixed test target one by one if the mixed test result is positive, find the positive sample, lock the relevant personnel, and then screen. But personally, I think the sampling of large-scale low-risk areas is cumbersome.
Whether it is mixed collection or mixed inspection, virus preservation solution is indispensable. Our company can produce non inactivated and inactivated virus preservation solutions, and various indicators can be customized according to customer needs. Welcome new and old customers to consult and purchase.