Lung check for smokers

It typically combines lung function testing (spirometry) with imaging, such as a low-dose CT scan, to assess how well your lungs are working and check for early structural changes. It's designed to pick up problems like COPD or early lung nodules before symptoms become obvious.

Smoking is the leading risk factor for lung cancer and chronic lung disease, so regular checks can catch problems earlier, when they're often more treatable. It's particularly relevant if you have a long smoking history, a persistent cough, breathlessness, or a family history of lung disease.

You don't usually need to fast, but you should avoid smoking, vaping, and caffeine for a few hours before spirometry, as they can affect breathing test results. Wear comfortable clothing that doesn't restrict your chest for the breathing assessment.

For spirometry, you breathe into a mouthpiece connected to a machine that measures airflow, following simple instructions from the technician. If imaging is included, a CT scan takes just a few minutes and involves lying still on a scanning table.

Spirometry doesn't hurt, though deep breathing efforts can feel a little tiring. A low-dose CT scan involves a small amount of radiation, which clinics keep as low as reasonably possible, and your doctor will discuss whether the benefit outweighs this for you.

Spirometry results are often available immediately, while CT imaging typically takes a few days for a radiologist's full report.

Reduced airflow on spirometry may suggest early COPD or asthma-type changes and often leads to further breathing tests or treatment discussions. A nodule or unusual finding on CT is common and most are benign, but your doctor will advise on monitoring or further imaging based on size and features. Either way, results are a starting point for a conversation with your doctor, not a diagnosis on their own.

NHS lung health checks exist in some areas for eligible smokers, though availability and waiting times vary by region. Private testing is typically available within days, with results reviewed by a specialist. Cost varies by provider.

Spirometry and low-dose CT are well-validated, widely used methods for assessing lung health and detecting early disease. As with any screening test, results are interpreted alongside your history and symptoms rather than in isolation.

You can book privately online, with appointments often available within a week, and have your results explained by a doctor or respiratory specialist who can advise on stopping smoking support too.