Hello sir I am using pulse oximeter of dr. Trust and it's reading give around spo2 98 and I used other also non branded which reading not sustain it change every second around 95 to 98 some time 94 but mostly time 95 to 96
Which one is more accurate if any body use this device to their patient and compare with professional devise so plz tell me I am covid +
I tested using pulse oximeter, his reading is 89,90 and 91. I am afraid . He do not have symptoms. He is
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