MediumRural & Remote MedicineCOPD diagnosis in rural populationsau-racgpau-amc
A 62-year-old man with long-standing smoking history presents with chronic cough and exertional breathlessness. He lives in a socioeconomically disadvantaged rural area with high COPD prevalence. Spirometry confirms COPD. According to COPD-X and recent Australian data, what is the MOST important diagnostic test that is often underused and should have been performed earlier in such high-risk patients?