Medtronic guardian Getting Started Manual - page 14
Starting-Up CGM | 12
st ep 5: C Alibr At inG
METER BG NOW alarm will sound when the system is ready for you to enter a BG meter value
for initial calibration. Clear the alarm and follow these steps to enter a BG meter value:
HoMe Screen > Main Menu > SenSor > enter Meter BG
After you calibrate, it will take 10–15 minutes for glucose sensor readings to appear on
your monitor.
After your initial calibration, another calibration will be required within 6 hours.
1 calibration every 12 hours is the minimum required to continue to receive glucose sensor
readings after the first day.
Calibrate 3–4 times a day thereafter for optimal glucose sensor accuracy.
If you get a CAL ERROR on your monitor, don’t worry. This is a feature of your system intended
to ensure good performance.
• To avoid a CAL ERROR make sure you calibrate when your glucose is least likely to be
changing rapidly
• If you get a CAL ERROR recalibrate if the BG is stable, otherwise wait 15–30 minutes before
calibrating again
The best times to calibrate the sensor are when your glucose levels are
least likely to be changing rapidly. Think before: before meals, before
bedtime, before insulin.
You do not need to wait until you are alerted to calibrate. You can
calibrate at any time when your glucose is stable.
The wireless transmission feature of linked BG meters should be turned OFF when
using CGM. You should manually calibrate the system as outlined on page 3.
Tip