Extended information:

Will two different acquisition methods affect the results?

Both nasopharynx and oropharynx can be used as samples, but no matter which method is used, it will eventually reach the pharynx, but in different ways.

Relatively speaking, the detection rate and accuracy of nasopharynx will be higher, but because the operation is more complicated and difficult, and some people are not easy to adapt, for example, people with nasal diseases such as rhinitis and nasal polyps may also cause bleeding during the collection process, and the collection speed is slow, so throat swabs, that is, oropharyngeal swabs, are often used in large-scale screening.

Compared with nasopharyngeal swab, oropharyngeal swab is quick, simple and easy to collect, and the detection rate can meet the requirements. For low-risk people, oropharyngeal examination is enough. For key people, or high-risk people, such as isolated people, nasopharyngeal swabs, even feces and blood samples will be required when the isolation is lifted. , and will require more than two testing institutions to test at the same time, the results are consistently negative, in order to lift the isolation.

Generally speaking, for different people and different needs, sample collection will be different, and they are all deployed according to the overall requirements of epidemic prevention and control.