@tomwoodham: The thing you get on your finger at the hospital is called a pulse oximiter and all it does is it measures how much oxygen you have in your blood. It does this by checking how red your blood is. More red = more oxygen Darker red = less oxygen Typically a healthy range is 94-98% Below 94% is considered low oxygen but for some people this can actually be normal so always check with a healthcare provider first!

TomWoodham | Mobility Coach

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Tuesday 27 January 2026 17:44:57 GMT