The frequency of repeat testing depends on the diagnosis and its stability. For stable, mild asthma — annual spirometry and FeNO. For COPD — spirometry every 1–2 years; DLCO and 6MWT annually. For ILD/pulmonary fibrosis — spirometry, DLCO, and 6MWT every 3–6 months, as these conditions can decline rapidly and treatment decisions (initiation or escalation of anti-fibrotic therapy, transplant referral) are triggered by objective functional decline. For patients starting new treatment — repeat lung function tests at 4–8 weeks to confirm response. Dr. Dixit Kumar Thakur schedules all follow-up lung function testing for Pulmovista patients as part of their personalised long-term management plan.
