Update calibrations are typically performed 12 hours since your last calibration; however,
they can be done sooner. As an example, if you know your next calibration is due at 10 PM,
but you want to go to bed at 9 PM, you can do the calibration before bedtime, resetting the
12-hour count down.
1. Enter one fingerstick measurement at least every 12 hours.
2. Display devices provide calibration prompts.
3. You may be prompted to enter additional fingerstick measurements as needed.
7.5 Calibration Prompts
Sensor Session Startup Calibration Prompts
Once your two-hour sensor startup is complete, your display device tells you it's time to enter
the first of your two back-to-back startup calibrations. Once the system has accepted your
BG values, your glucose readings begin. If you don't enter your BG values right away, the
system reminds you every 15 minutes. Remember, only use your BG meter for calibrations,
and never enter values from your CGM.
Dexcom G5 Mobile System User Guide
Calibration
101
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