A pulse oximeter is a system that measures the oxygen level in a person’s blood. Some individuals use a pulse oximeter to keep observe of basic well being, while others could use it to watch symptoms of COVID-19 or other circumstances. Pulse oximeters can be used at residence and are easy to operate, although it’s a good idea to share readings along with your healthcare provider. Over-the-counter pulse oximeters might be bought in shops and online at Walgreens. In case you are utilizing an over-the-counter (OTC) pulse oximeter, you will seemingly attach a clip-on probe to your fingertip or earlobe. The machine makes use of mild beams to find out how much oxygen is in the blood. The studying on the screen will sometimes supply two or three numbers, with crucial being the oxygen saturation stage, which is an estimate of how a lot oxygen is in your blood. Over-the-counter (OTC) pulse oximeters usually display two or three numbers on the display screen after a studying. These numbers embrace oxygen saturation stage (SpO2), pulse rate (PR), and sometimes a 3rd number representing the energy of the signal. The real-time SPO2 tracking will be proven as a percentage. Most wholesome folks will have an oxygen saturation stage between 95% and 100%. It could also be decrease in individuals with lung problems or these living at high altitudes. Over-the-counter pulse oximeters are completely different from prescription pulse oximeters, as they do not bear FDA evaluation. The SpO2 quantity is all the time an estimate, and OTC pulse oximeters may not at all times show an correct studying. Poor circulation, darker skin coloration, thick skin, pores and skin temperature, and darkish nail polish can all increase the chance of an inaccurate studying. OTC pulse oximeters should by no means be used rather than going to your healthcare supplier for advice and treatment. Always converse along with your healthcare supplier before utilizing a pulse oximeter, and see your provider if you're experiencing shortness of breath or different severe symptoms.