How To Calibrate - Dexcom G4 Platinum User Manual

7.2 HOW TO CALIBRATE

You must enter the exact blood glucose value from your meter for each
calibration. Blood glucose values must be between 40-400 mg/dL and
must have been taken within the past 5 minutes.
• Make sure either a sensor glucose reading or a calibration needed
symbol shows at the top of the trend graph before calibrating.
• Your sensor can be calibrated if your meter glucose is 40 mg/dL or
above. For safety reasons, if your blood glucose is low, first treat
your low blood sugar.
• Always make sure the antenna symbol
corner of the trend graph before you enter blood glucose values
for calibration.
• Always use the same meter to calibrate that you routinely use to
measure your blood glucose. Do not switch your meter in the middle
of a sensor session. Blood glucose meter and strip accuracy vary
between blood glucose meter brands.
• The accuracy of the blood glucose meter value used for calibration
may affect the accuracy of sensor glucose readings.
WARNING
Do calibrate at least once every 12 hours. Calibrating
less often than every 12 hours might cause sensor
glucose readings to be inaccurate and glucose
alerts to become unreliable. This could result in you
missing severe hypoglycemia (low blood glucose) or
hyperglycemia (high blood glucose) events.
Dexcom G4 PLATINUM (Pediatric) System User's Guide
is in the upper left
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