Definition of Nasopharyngeal culture:

Nasopharyngeal culture is a sample of secretions from the uppermost part of the throat, behind the nose, to detect organisms that can cause disease.

How the test is performed:

You will be asked to cough before the test begins and then tilt your head back. A sterile cotton-tipped swab is gently passed through the nostril and into the nasopharynx, the part of the pharynx that covers the roof of the mouth. The swab is quickly rotated and then removed.

How to prepare for the test:

There is no special preparation necessary.

How the test will feel:

You may experience slight discomfort and may gag.

Why the test is performed:

The test identifies viruses and bacteria that cause upper-respiratory tract symptoms. Nasopharyngeal cultures are useful in identifying respiratory viruses, and bacteria such as:

• Bordetella pertussis
• Neisseria meningitidis
• Staphylococcus aureus

The culture may be used to help determine which antibiotic therapy is appropriate.