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There may be times when the numbers temporarily don't match, but are likely to
become closer over time. For example:
Sensor's first day: With newly inserted sensors, the differences between your BG
l
meter value and the sensor reading may be greater. Generally, the numbers get
closer over the first 24 hours.
Pressure on sensor: Sometimes when something is pressing on your sensor, for
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example, if you're lying on it, it can affect your sensor readings. Relieve the
pressure and the numbers should get closer.
To determine what to do, watch your sensor readings over several hours. If the sensor
readings are always higher (or always lower) than your BG meter values, consider
using a different BG meter or calibrating G7 using your BG meter. Also consider
calibrating your G7 using your BG meter if your G7 and BG meter numbers don't
match, and your expectations or symptoms fit the BG meter value, not the sensor
reading.
Calibration
Calibrating your G7 using your BG meter is optional. Use it to move your sensor
reading closer to your BG meter value.
Your sensor readings come from different fluids than your BG meter values, so they're
unlikely to be the same number. Neither number is as accurate as the lab test your
doctor does.
11 • Troubleshooting |
Dexcom G7 User Guide
95
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Do you have a question about the G7 and is the answer not in the manual?
Questions and answers
Dexcom G7 continues to show readings 50 or 60 points higher than when I stick my finger and use the supplied recorder. Why?
The Dexcom G7 may show readings 50 or 60 points higher than fingerstick measurements due to several reasons:
1. Sensor's First Day: Newly inserted sensors may show larger differences, which usually decrease over the first 24 hours.
2. Pressure on Sensor: If something is pressing on the sensor (e.g., lying on it), it can affect readings. Removing the pressure can help.
3. Rapid Glucose Changes: Blood glucose changes before interstitial fluid glucose, so fast changes can cause differences between meter and sensor readings.
4. Fingerstick Issues: Inaccurate fingerstick readings can occur if hands are not washed properly or test strips are expired or used incorrectly.
These factors can cause temporary differences between Dexcom G7 and fingerstick readings.
This answer is automatically generated
How high does the Dexcom 7 reciever go?