Buy Contec Finger Tip Pulse Oximeter – Blood Oxygen Saturation (SpO2) and Pulse Rate Monitor – Portable LED Display: … For example, my O2 reading is usually 93/94. According to multiple reputable websites: “contact your health care provider if your Sp02 drops below 90-95%”. The values jump ±2 counts easily even during the same test, though I …
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