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It reads both blood oxygen saturation levels and heart rate and delivers both in an incredibly simple, read-at-a-glance visual display. The Zacurate Pro 500DL has everything you need in a pulse oximeter: accuracy and reliability. If all you need is a quick oxygen saturation check, this device gets the job done better than most. And with the cheaper price tag, you’re not giving up accuracy-just added features. The batteries are intended to last up to 24 hours, and the device shuts off automatically after five seconds to help battery life last longer.īest yet, it’s one of the most affordable devices on the market. It measures your oxygen saturation through a finger sensor and displays both your blood oxygen saturation level as well as your average heart rate. In addition to being accurate, this device is simple to operate-you just have to turn it on, slip it on, and wait for a reading. Plus, it's an FDA-approved medical device, so the standard of quality meets certain requirements.

When researchers at the University of California at San Francisco tested six low-cost finger pulse oximeters, the Contec CMS-50DL was one of two that read oxygen saturation precisely enough to meet the International Organization for Standardization (ISO) criteria for accuracy. Here are the best pulse oximeters on the market today. “There aren’t any known risks to using a pulse oximeter unless how to interpret the numbers you have.” “It’s normal for your oxygen to fluctuate between 95 and 100% if you are otherwise healthy” Kathleen Dass, MD, an allergist and immunologist privately practicing in Michigan, tells Verywell Health.

Your symptoms may be mild, but a sudden drop in your blood oxygen saturation can be an early warning bell to go see your doctor ASAP.

While you should always consult your physician first if you’re concerned about your blood oxygen levels, a pulse oximeter can regularly spot-check your levels on a daily basis. The device is a painless, reliable way to check someone's oxygen saturation-or the amount of oxygen that's currently being pumped through your blood.

Pulse oximeters have traditionally been used by nurses and clinicians, or for home monitoring with conditions like chronic obstructive pulmonary disease (COPD) or pulmonary fibrosis.