User`s guide
140 | Dexcom G4 PLATINUM Continuous Glucose Monitoring System
13
glucose to calibrate. Do not switch your meter in the middle of
a sensor session. Blood glucose meter and strip accuracy vary
between blood glucose meter brands.
• Before taking a blood glucose measurement for calibration, wash
your hands, make sure your glucose test strips have been stored
properly and are not expired and make sure that your meter is
properly coded (if required). Carefully apply the blood sample to
the test strip following the instructions provided with your meter or
test strips.
• Make sure you are using your blood glucose meter following the
manufacturer’s instructions to get accurate blood glucose values
for calibration.
• Make sure you have not taken any medications containing
acetaminophen (such as Tylenol) to ensure you are getting accurate
blood glucose values for calibration.
13.6 SENSOR SHUT-OFF TROUBLESHOOTING
In some cases your sensor session may stop or need to be stopped
before the end of a full 7-day period. You must remove your sensor.
13.6.1 EARLY SENSOR SHUT-OFF – SENSOR
FAILURE
The receiver may detect issues with your sensor
where it cannot determine your sensor glucose
reading. The sensor session ends and the
receiver shows the “Sensor Failed” screen. If
you see this screen, it means your CGM session
has ended. Press the SELECT button to clear
this screen.
Remove your sensor and insert a new sensor.
To help improve future sensor performance:
• Make sure your sensor is not expired.
Sensor Failed screen