SP O2 is it thing to be fluctuating kindly keep the pulse oximeter for a complete one minute in your index finger or thumb after washing your hands with soap and water and the rating after one minute will be the final reading.
Kindly consult with a picture of your pulse oximeter while taking their SPO2 level
Keep the hand still while taking the reading .
Even after this the readings are fluctuating you can consult me for further guidance
Next Steps
For further clarification, complete evaluation, correct diagnosis and treatment and prescription feel free to consult me on this PRACTO APP. Stay safe and take care of yourself