What is considered a normal oxygen saturation level at sea level?

A normal oxygen saturation level at sea level typically ranges from 95% to 100%. While an oxygen saturation level of 98% is representative of this normal range, it also reflects the upper end of typical values seen in healthy individuals at sea level. Oxygen saturation levels are often measured using a pulse oximeter, which provides real-time data on the percentage of hemoglobin binding sites in the bloodstream occupied by oxygen.

When evaluating oxygen saturation, levels around 95% or higher signal that the body is effectively taking in and utilizing oxygen from the lungs. Values below this threshold, such as 90% or 92%, may indicate potential respiratory issues or other underlying health concerns. Therefore, while both 95% and 98% can be considered normal, 98% more accurately depicts optimal oxygen saturation in a healthy individual under typical conditions at sea level.