Researchers developed a promising blood test that identifies adults at high risk of severe respiratory diseases like COPD. The test analyzes 32 proteins linked to lung function decline. This information comes from a 30-year study where participants provided blood samples and underwent lung function tests. Adults with higher scores in the blood test were more likely to require hospitalization for respiratory issues, develop COPD, and die from respiratory diseases. While the test isn’t ready for widespread use yet, it has the potential to identify high-risk patients early so interventions can be implemented to improve their long-term lung health.