Dexcom G5 MOBILE User Manual page 107

Warning
Do: Calibrate at least once every 12 hours.
Why: Calibrating less often than every 12 hours might cause inaccurate sensor glucose
readings.
Consequences: Missing a severe low or high blood glucose event or making a
treatment decision that results in injury.
Precaution
Do: Look at trend arrows before calibrating. Trend arrows help you determine if you can
calibrate now or should wait.
Don't: Never calibrate if your BG is changing at a significant rate, typically more than 2
mg/dL per minute.
Never calibrate when you see:
• A single arrow, pointing up
– Rising 2-3 mg/dL each minute
• Two Arrows pointing up
– Rising more than 3 mg/dL each minute
• Single arrow pointing down
– Falling 2-3 mg/dL each minute
• Two arrows pointing down
– Falling more than 3 mg/dL each minute
Why: Calibrating during significant rise/fall of BG may affect accuracy of sensor
glucose readings.
Consequences: Missing a severe low or high blood glucose event or making a
treatment decision that results in injury.
Dexcom G5 Mobile System User Guide
Calibration
105