Best Pulse Oximeters for Overnight Monitoring 2021

Pulse oximeters, which simply clip onto your fingertip, are non-invasive devices that can measure blood oxygen saturation as well as pulse (heart rate). They are relatively inexpensive (about $20) and can be purchased for home ("non-medical") use. An overnight pulse oximeter test is a good initial screening tool to test for signs of sleep apnea. If the percentage of oxygen in the blood is always above 94% during sleep, then your brain is getting enough oxygen. If the brain does not get consistent oxygen during sleep, you might have signs of sleep apnea, which include morning headache, excessive daytime tiredness, insomnia, snoring, gasping for air during sleep, dry mouth, etc. How Do You Monitor Oxygen Levels While Sleeping? If you want to discover your blood oxygen levels during your sleep, you could go to a sleep lab to have an overnight sleep study, or you can use a pulse oximeter to monitor sleep at home. The pulse oximeter can be a very useful medical device for sleep ap...