Handheld breath test could spot lung disease early

This study evaluates a portable device that measures lung function using oscillometry—a technique that sends gentle sound waves into the lungs—to diagnose chronic respiratory diseases like COPD, asthma, and bronchiectasis. Researchers will enroll about 4,000 adults across 50 centers, including people with known or suspected lung conditions and healthy volunteers. Participants undergo a single visit with breathing tests, and the goal is to see how well the device detects disease compared to standard methods, potentially leading to an AI-based diagnostic tool.