The differences between single and mixed nucleic acid tests are the price difference, the finding of a positive or suspected positive, the ability to more accurately locate an infected person, and the rest of the differences are not significant. The nucleic acid test is generally a novel coronavirus pneumonia nucleic acid test, which is primarily used to screen and confirm the diagnosis of patients who are positive for novel coronavirus pneumonia. 1. The price is different: single test according to the different regions and testing organizations, etc., at present, generally around 30 yuan / person; mixed test has 10 people mixed test and 20 people mixed test, generally around 8 ~ 10 yuan / person. If a certain area is collected on a large scale, it is free of charge. 2. Accurately find patients: single test can be based on individual single test information, can be the first time to find nucleic acid-positive infected people; mixed test needs to be all the people in the test tube again called for a single test, to confirm the diagnosis of specific infected people. The accuracy of the test results is the same regardless of whether it is a single test or a mixed test, and there is no difference. When testing for nucleic acids, you should wear a mask, keep a distance of one meter, and go home immediately after collection without staying outside. Positively infected persons are transported by medical professionals to a designated isolation site for treatment. Tip: The term “new coronavirus pneumonia” has been renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.