1st April 2022

A 45-year-old ex-smoker with a previous pack history of 20 for the last 20 years has come into his GP practice

A 45-year-old ex-smoker with a previous pack history of 20 for the last 20 years has come into his GP practice complaining of persistent chronic cough with regular sputum production. He has been treated previously for an infection with amoxicillin a few months ago, but the cough has not subsided. His GP makes the diagnosis of COPD. What additional test is required for confirmation of the diagnosis?

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