Chapter 7: Calibrating Your Dexcom G4 Platinum System; Calibration Overview - Dexcom G4 PLATINUM User Manual

CHAPTER 7: CALIBRATING YOUR DEXCOM G4 PLATINUM SYSTEM

You must calibrate Dexcom G4 PLATINUM System sensor glucose readings to your blood glucose meter.
CONTRAINDICATION
Taking medications with acetaminophen (such as Tylenol) while wearing the sensor
may falsely raise your sensor glucose readings. The level of inaccuracy depends on
the amount of acetaminophen active in your body and may be different for each
person.

7.1 CALIBRATION OVERVIEW

Your receiver needs calibrations to display continuous sensor glucose readings and trend information.
There are important times when you must calibrate:
1. 2-hour startup: 2 hours after you insert your sensor
2. 12 hour update: every 12 hours after the 2-hour startup calibration
3. More information needed or other reasons
When calibrating, you must enter your blood glucose values into the receiver by hand. You can use any
commercially available blood glucose meter. You must calibrate with accurate blood glucose meter values
to get accurate sensor glucose readings.
On the first day of your sensor session, you must enter 2 blood glucose values into your receiver. You must
enter 1 blood glucose value calibration 12 hours after your startup calibration. You must enter 1 blood
glucose value every 12 hours. The receiver will remind you when it needs these calibrations. You may be
prompted to enter additional blood glucose values as needed.
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