For most healthy individuals, a normal blood oxygen level (SpO2) is between 95% and 100% , regardless of age. Newborns are an exception. For the first few minutes of life, a level between 90% to 95% is considered normal, but it should quickly rise to the 95% to 100% range. The blood oxygen levels of your body is a measure of how much oxygen the red blood cells are carrying 95 to 100 percent is considered normal. IntroductionBlood oxygen level in the human body refers to the concentration of oxygen dissolved or bound to hemoglobin in the bloodstream. It is typically measured as arterial oxygen saturation (SaO2) or oxygen saturation (SpO2), expressed as a percentage. SaO2 or SpO2 measurements provide valuable information about oxygen transport and delivery efficiency in the body . Maintaining a blood oxygen level of 75–100 mm Hg or 95–100% is vital for a healthy heart, brain, and kidneys. Most people don’t need to monitor their blood oxygen levels regularly.
