New Crown Nucleic Acid Testing is performed at sites including the nasopharynx, pharynx, and anus.
Nucleic acid test is used for the diagnosis of viral infectious diseases, mainly in the nasopharynx and pharynx collection, sampling needs to enter the nasal cavity, the back wall of the throat at the collection of secretion detection.
1. Pharynx: mostly used for general public screening, pharyngeal swabs are collected from the pharynx, the collector presses the tongue of the examinee with a cotton swab, and extends it into the posterior wall of the pharynx and tonsils.
2. Nasopharyngeal: mostly used for close contacts, or suspected infected people screening, the examinee will have a foreign body sensation, sneezing and other reactions should be avoided during the examination, the examinee to clean up the nostrils, nasal cavity, collect to keep the head immobile, the examiner inserted into the nasopharyngeal part of the collection with a cotton swab, compared with the pharyngeal swabs, nasopharyngeal swabs with a higher degree of accuracy.
3. Anal: high-risk groups, such as close contacts with the diagnosed person or people with a history of living in high-risk areas, in addition to the application of nasal swabs, pharyngeal swabs, anal swabs are also required for testing.
Others can also collect sputum and lower respiratory secretions, feces, urine and other tests.