What Does It Mean to Calibrate?
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The Dexcom® SEVEN® PLUS System requires you to “calibrate” the sensor glucose readings to your blood glucose meter. The purpose of calibration is so the glucose your sensor measures can be displayed to you in a reading on your receiver that is like your blood glucose meter reading.
Start-Up calibration happens at the end of the 2-hour start up period. Start-Up calibration takes 2 blood glucose fingersticks. Calibration update is a calibration that must be performed every 12 hours (about 2 times per day). The receiver will remind you when these calibrations are needed. Re-calibration may be required if one of the blood glucose readings entered for start- up calibration or calibration update is not accepted by the receiver.
Helpful Hints:
- Do not use alternative BG site testing (blood from your palm or forearm, etc.) for calibration. You must take your blood glucose from your fingertips only for calibration.
- Calibrate once every 12 hrs.
- If your Dexcom and BG meter values are far apart, enter up to 3 finger stick values, each one 10-15 minutes apart.