Hypoxia and Medicine

What is a normal oxygen saturation level?

Is it different depending on altitude?

Public Comments

1. Whether you're talking about oxygen saturation from a blood sample or from a finger probe ('pulse oximeter') the answer is 98%-99% (maybe a little lower with age).
2. 98
3. 21%
4. Generally it should be above 90% on room air.
5. 98 to 99% on a Pulse Oximeter
6. 100% but 95% - 100% is normal ar sea-level
7. 98% to 99%
8. Your depth of breathing and rate of breathing is adjusted by your body to keep your arterial blood oxygen saturation level about 95+% (this can be checked with a simple oximeter) and the arterial carbon dioxide at 40 mm Hg (this usually requires an arterial blood sample to check).
9. 99%, Human body is an extremely efficient machine..