The ENT doctor may do several kinds of tests to look inside the nasal cavity and sinuses, including: passing a small camera into the nose (nasal endoscopy) MRI CT (CAT) scan If there is a sinonasal ...

If more than a common cold is suspected, additional tests may be run, such as: Blood tests Allergy skin tests Sputum and/or throat culture Sinus and/or chest X-ray Exploration of the entire nasal ...