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OXYgen Test Finger pulse oximeter | PiC Solution
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Finger Pulse Oximeter for Home Use Portable Fingertip Blood Oxygen Saturation Monitor, Heart Rate SpO2 Level Meter with Oximeter Storage Box - Walmart.com
Device used to measure blood oxygen can give misleading information to Black patients, study finds
Pulse Oximeter: What It Measures, How It Works, and How to Read It