Pulse Oximeter is a kind of medical test performed to examine the level of oxygen, i.e., oxygen saturation in the blood of an individual. It is an easy and painless method to measure how well oxygen is supplied to the body parts by the heart. It is considered a quick and inexpensive needle-free test. For performing Pulse Oximetry, an electronic instrument known as a pulse oximeter (pulse Ox) is used which is non-invasive. It uses a spectrophotometric methodology to calculate the oxygen count in the blood of an individual.

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