Dexcom G7 - Page 102

11 • Troubleshooting | Dexcom G7 User Guide 95
There may be times when the numbers temporarily don't match, but are likely to
become closer over time. For example:
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Sensor’s first day: With newly inserted sensors, the differences between your BG
meter value and the sensor reading may be greater. Generally, the numbers get
closer over the first 24hours.
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Pressure on sensor: Sometimes when something is pressing on your sensor, for
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.