Spo2 normal range: Pulse oximetry is a

Pulse oximetry is a non-invasive method for measuring blood oxygen levels at home and in healthcare settings (e.g., doctor's offices, hospitals). 6 A pulse oximeter is a small device that clips ... Pulse oximetry is a noninvasive, painless test that measures the oxygen saturation level of your blood. Here’s how it works and what the readings mean. Definition: SpO2 represents the percentage of hemoglobin molecules carrying oxygen in arterial blood. A value of 95% means 95% of hemoglobin is oxygenated. Significance: Normal SpO2 (95–100%) indicates efficient oxygen delivery to tissues, essential for organ function. Readings below 90% (hypoxemia) suggest respiratory or cardiovascular issues.