Breathing is something most people only notice when it becomes difficult. Blood oxygen levels can shift without obvious symptoms, and peak expiratory flow—the speed and force of each exhale—can decline gradually over days or weeks before the change becomes obvious. For people managing asthma, COPD, or any condition affecting the respiratory system, a consistent home reading routine makes those shifts easier to catch and discuss with a clinician.

The Lung & Oxygen Kit combines pulse oximetry, peak flow monitoring, and blood pressure readings into one organized home routine. Whether you're checking SpO2 after activity, tracking peak flow as part of an asthma action plan, or keeping blood pressure records alongside respiratory health, the Kit keeps all three readings in one place—organized, connected, and easier to share.

Why these readings belong together

Blood oxygen and peak flow each reflect something different about how you're breathing.
Together, they build a picture that either reading alone can't give you.

Changes you can't always feel

Blood oxygen saturation can drop without obvious symptoms. Peak expiratory flow can decline gradually over days before you notice a difference in how you feel. By the time the change is obvious, it's harder to trace back.

Each measures something different

SpO2 reflects how much oxygen is in your blood. Peak flow reflects how forcefully you can exhale. One tells you about oxygen delivery; the other tells you about airway resistance. You need both to see the full picture.

A baseline makes changes visible

A single reading in isolation is hard to interpret. A series of readings taken consistently over time gives you a personal baseline—so when something shifts, you can actually see it.

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