Normal blood oxygen level is either 95%-100% SpO2 on an oximeter or 80-100 mm Hg from an ABG test. ABG tests are more accurate than pulse oximeters, which have a ...
If someone’s blood oxygen level falls below 60 mm Hg, there may not be enough oxygen reaching the body’s vital organs. This can lead to symptoms such as shortness of breath and dizziness. This article ...