Nasal specimens are indicated when testing for all of the following conditions except:

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Nasal specimens are commonly used to test for respiratory viruses such as rhinoviruses, respiratory syncytial virus (RSV), and influenza because these pathogens infect the respiratory tract and are present in nasal secretions. Sinus infections, however, are typically diagnosed based on clinical symptoms and sometimes imaging studies, rather than direct testing of nasal specimens.

Nasal Specimens Are Indicated When Testing for All of the Following