What is the Pulse oximeter. Pulse oximeter is a painless and non-invasive test that determines your oxygen saturation level or the amount of oxygen in your blood. It can detect even little variations in the efficiency with which oxygen is transported to the extremities furthest from the heart, such as the legs and arms. A pulse oximeter is a small, clip-like device that is worn on a body portion such as the toes or earlobe. It’s usually worn on a finger and is frequently utilized in critical care settings like emergency rooms and hospitals. It may be used in the office by some clinicians, such as pulmonologists. Uses and purposes…