What should a patient do before a nasal swab test to ensure accuracy?

Prior to a nasal swab test, it is crucial for the patient not to blow their nose. This step is important because blowing the nose can clear mucus and potential viral particles from the nasal passages, potentially leading to a false-negative result. By refraining from blowing their nose, patients help ensure that a sufficient sample containing any pathogens present in the nasal cavity is collected during the swab test. This action enhances the accuracy of the test results, which is essential for proper diagnosis and subsequent treatment.

While options related to drinking water, remaining still, or blowing the nose seem relevant to the testing process, they do not specifically contribute to the accuracy of the nasal swab in the same way that avoiding blowing the nose does.