How to Obtain a Nasopharyngeal Swab Specimen - NEJM18 Apr, 2020
Collection of specimens from the surface of the respiratory mucosa with nasopharyngeal swabs is a procedure used for the diagnosis of Covid-19 in adults and children. The procedure is also commonly used to evaluate patients with suspected respiratory infection caused by other viruses and some bacteria. This video describes the collection of nasopharyngeal specimens for detection of Covid-19, the illness caused by infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
There are no specific contraindications for collecting specimens with nasopharyngeal swabs. However, clinicians should be cautious if the patient has had recent nasal trauma or surgery, has a markedly deviated nasal septum, or has a history of chronically blocked nasal passages or severe coagulopathy.