Aluna spirometer: what home readings can tell you

Repeated measurements may help a clinician see changes over time when they are collected with a consistent technique. One unusually high or low result can reflect effort, posture, coughing, an imperfect seal, or a device issue rather than a true change in the lungs.

A spirometer measures air moved during a forceful exhalation. Clinicians interpret the pattern alongside age, height, sex, symptoms, diagnoses, and the quality of each attempt. A home trend can support monitoring, especially when paired with a symptom and medicine diary, but it cannot independently confirm asthma, chronic obstructive pulmonary disease, or another respiratory condition. Formal spirometry follows controlled procedures and quality checks.

Follow the device instructions and the schedule agreed with your clinician. Sit or stand as directed, attach a clean mouthpiece, inhale fully, seal your lips around it, then blow out as hard and continuously as instructed. Record symptoms, recent reliever use, and anything that interrupted the attempt. Keep the mouthpiece clean and dry, check the device for damage, and do not change prescribed treatment solely because of an app alert or isolated number.

Seek emergency help for severe breathlessness, blue or grey lips, confusion, fainting, chest pain, inability to speak comfortably, or symptoms that continue to worsen despite the prescribed rescue plan. Do not delay care while repeating spirometer attempts or waiting for the app to update. Contact your clinician promptly when readings repeatedly differ from your usual range, breathing symptoms are increasing, or you need reliever medicine more often than your agreed plan allows.

Confirm which measurement matters for your condition, when to test, how many acceptable attempts to record, and what change should prompt contact. Ask your clinician to watch your technique and explain how device readings fit with symptoms, inhaler use, and clinic testing. Also check whether illness, recent exercise, or breathing medicines should be documented before each session.