Step 1: Make sure, There’s no nail paint or false nails. Your hand is not cold. You rest for 5 minutes before taking a reading.
Step 2: Now, rest your hand on your chest at heart level and hold it still. Switch on the oximeter and place it on your middle or index finger.
Keep the oximeter in place for at least a minute, or longer if reading isn’t stable. Now, record the highest result once it has not changed for 5 seconds.
Take readings thrice a day, at the same time slots every day.
Seek medical help immediately, if
Your oxygen level is 92% or less, or
You are unable to complete short sentences,
due to breathlessness.