A finger oximeter is a small, clip-like device that measures your blood oxygen saturation (SpO2) and pulse rate. To get an accurate reading, follow these steps:
- Place the oximeter on your finger. Most oximeters are designed to be placed on the index finger. Make sure the device is snug but not too tight.
- Wait for the reading to stabilize. It takes time for the oximeter to get a steady reading. Keep the device in place for at least a minute, or longer if the reading keeps changing.
- Record the highest reading. Once the reading has not changed for five seconds, record the highest result.
- Identify which reading is your heart rate and which is your oxygen level. Most oximeters display both readings. The oxygen level is usually shown as a percentage (SpO2), while the heart rate is shown in beats per minute (bpm).
Normal readings:
- SpO2: A normal SpO2 reading is between 95 and 100 percent for healthy adults.
- Heart rate: An ideal heart rate is between 50 and 90 beats per minute (bpm).
Important notes:
- The accuracy of a pulse oximeter decreases when blood oxygen saturation is below 90%.
- Pulse oximeters do not measure breathing or carbon dioxide removal.
If you have concerns about your SpO2 or heart rate, consult your doctor.
