Sensor Shut-Off Troubleshooting; Early Sensor Shut-Off - Sensor Failure; Manual Sensor Shut-Off - "Stop Sensor - Dexcom G4 PLATINUM User Manual

• Do not use alternative blood glucose site testing (blood from your palm or forearm, etc.) for calibration
as alternative site readings may be different than those from a blood glucose value. Use a blood glucose
value only from your fingers for calibration.
• Use only blood glucose values between 40-400 mg/dL for calibration. If one or more of your values is
outside of this range, the receiver will not calibrate.
• Use the same meter you routinely use to measure your blood 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
Remove your sensor and insert a new sensor.
To help improve future sensor performance:
• Make sure your sensor is not expired.
• Make sure your transmitter is snapped in.
• Make sure your sensor pod is not dislodged or peeling up.
• Make sure nothing is rubbing the sensor pod (i.e. clothing, seat belts, etc.).
• Make sure you have selected a good insertion site (see Chapter 6, Section 6.3, Choosing an Insertion
Site).
• Make sure your insertion site is clean and dry prior to sensor insertion.
13.6.2 MANUAL SENSOR SHUT-OFF – "STOP SENSOR"
There may be times that you will want to stop your sensor session before the end of the seven days.
Some of these times may include removing the sensor early due to:
button to clear this screen.
SELECT
78