Nose swab study aims to objectively score lung disease severity

This completed study tested a new device that collects fluid from the nose to find biological markers for respiratory diseases like COPD, asthma, hayfever, and sinusitis. Researchers compared 111 adults—both healthy volunteers and those with these conditions—to see if nasal biomarkers can objectively measure disease severity and quality of life. The goal is to develop a simple, painless test that gives a clear severity score without relying only on symptoms.