Neocoronavirus nucleic acid testing has anal swabs. New coronavirus nucleic acid test can be used to determine whether there is a new coronavirus infection by looking for the presence of new coronavirus nucleic acid in the respiratory specimen, blood or feces of the sampler, the common means are mainly nasal swabs and oropharyngeal swabs, which are suitable for large-scale screening because of their convenience, but there are also anal swabs. Anal swabs are generally only used for key populations in isolation sites, such as those who have been placed under centralized isolation for observation, those highly suspected of being infected with the new coronavirus in fever clinics in hospitals, and those with gastrointestinal symptoms. Because the fecal or anal swabs positive for New Crown nucleic acid last longer, the addition of anal swabs helps to increase the detection rate, effectively reduce the probability of false negatives, and reduce the number of missed diagnoses; if necessary, you should actively cooperate with your physician to conduct anal swab testing.