Test Receiver; No Alternative Site Testing – Fingerstick Only; When Not To Calibrate - Dexcom G5 User Manual

Precautions (continued)
The following precautions may result in the consequence of missing severe hypoglycemia
(low blood glucose) or hyperglycemia (high blood glucose) or making a treatment decision that
results in injury:

Test Receiver

Test your receiver speaker and vibration often. To test the speaker and vibration
use the Speaker Test or go through the Try It menu option. Always test if your
receiver gets wet or dropped.
To use the Speaker Test, plug the receiver in to charge to see the Speaker Test
screen. Proceed through the speaker test. To use the Try It menu option, go to the
Sounds menu and select Try It. Either way, if it doesn't vibrate and beep, contact
Technical Support.
If the vibration motor and/or speaker on your receiver is not functioning properly
you may miss a severe low or high Alarm/Alert. Use the app on your smart device
until this issue is resolved.
Keep Receiver Clean and Dry
Do not get dirt or water in the USB port and do not submerge in water.
If dirt or water gets into the USB port, the receiver could become damaged and
stop displaying readings or providing Alerts; you might miss a severe low or high
glucose event.
No Alternative Site Testing–Fingerstick Only
Do not use alternative site blood glucose testing (blood from your palm or forearm,
etc.) for calibration. Alternative site blood glucose values may be different from
those taken from a fingerstick blood glucose test and may not represent the
timeliest blood glucose value. Use a blood glucose value taken only from a
fingerstick for calibration. Using alternative site blood glucose values for calibration
might affect Dexcom G5 Mobile accuracy.

When Not to Calibrate

Do not calibrate if your blood glucose is changing at a significant rate, typically
more than 2 mg/dL per minute. Do not calibrate when your receiver screen is
showing the rising or falling single arrow or double arrow, which indicates that your
Dexcom G5 Mobile System User Guide
Indications for Use and Safety Statement
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