User's Manual
Dexcom G5x System User Guide
Calibration
110
Warning
Do:
Calibrate at least once every 12 hours.
Why: Calibrating less often than every 12 hours might cause sensor
glucose readings to be inaccurate.
Consequences: Missing severe low (hypoglycemia ) or high
(hyperglycemia) glucose event.
Precaution
Do:
Look for rate of change arrows on your display device screen. Trend
arrows help you determine if you can calibrate now or should wait.
Don’t:
Calibrate when your BG is changing at a significant rate: more than
2 mg/dL per minute.
Don’t calibrate when you see
:
•
A single arrow, pointing up
o
Rising 2-3 mg/dL each minute
•
Two arrows pointing up
o
Rising more than 3 mg/dL each minute
•
Single arrow pointing down
o
Falling 2-3 mg/dL each minute
•
Two arrows pointing down
o
Falling more than 3 mg/dL each minute
Why: Calibrating during a significant rise/fall of your BG may affect
accuracy of sensor glucose readings.
Consequences: You may miss a severe low or high glucose event.
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