The Asthma Diagnosis segment is organized primarily by application, which drives revenue allocation across the broader market. Hospital settings account for the largest share (approximately 45% of total sales) because they require comprehensive testing suites, including spirometry and fractional exhaled nitric oxide (FeNO) analyzers, to support acute care pathways. Clinic environments contribute roughly 35%, reflecting routine outpatient monitoring where portable spirometers and peak‑flow meters dominate. Homecare represents about 15% of the market, driven by telehealth initiatives and patient‑managed devices that enable longitudinal data capture. Finally, Research institutions comprise the remaining 5%, focusing on advanced imaging and biomarker platforms for clinical trials. Within each application, types of diagnostic tools—spirometry, FeNO, peak flow, and imaging—are differentiated by accuracy, cost, and clinical utility, collectively shaping the overall Asthma and COPD Diagnosis segmentation and influencing strategic investment decisions.