A good pulse oximeter has a Perfusion Index (PI) and an OLED display with large numbers. The PI indicates if you’re getting a bad reading but the pulse is weak. The OLED display is bright and easy to see.
A tympanic type, a digital type, and certain forehead scanner thermometers are all accurate. The differences among them are speed and comfort. They are all accurate to within 2/100ths of a degree.
Yes, you can and you should use a pulse oximeter to check for COVID-19 symptoms, according to Doctors Christy Reisinger and Richard Levitan. Both doctors treat COVID-19 patients. They both report that low blood oxygen is a seen in most if not all patients infected with COVID-19.
Low blood oxygen (hypoxemia) is a significant indicator of COVID-19 infection. These pulse oximeters can be your safety net to monitor for infection. If oxygen gets low, consider seeking medical help. This is even more important if you have a fever.
If you are a senior with certain illnesses, Dr. Reisinger advises you to consider getting a pulse oximeter to test yourself for hypoxia. Seniors in the higher-risk group who have hypoxia and a fever should probably go to the Emergency Room.