User`s guide
26 | Dexcom G4 PLATINUM Continuous Glucose Monitoring System
2
ischangingatasignicantrate(e.g.,2-3mg/dL/minor
more than 3 mg/dL each minute), such as during exercise
or after a meal.
• The transmission range from the transmitter to the receiver
is up to 20 feet without obstruction. Wireless communication
does not work well through water so the range is much
less if you are in a pool, bathtub, or on a water bed, etc.
Types of obstruction differ and have not been tested. If your
transmitter and receiver are farther than 20 feet apart or are
separated by an obstruction, they might not communicate or
the communication distance may be shorter and you might
miss a low or high blood glucose value.
• Keep the USB port cover on the receiver closed whenever
the USB cable is not attached. If water gets into the
USB port, the receiver could become damaged and stop
displaying readings or providing alerts, and you might miss
a low or high blood glucose value.
• Do not use alternative blood glucose site testing (blood
from your palm or forearm, etc.) for calibration. Alternative
site blood glucose values may be different than those
takenfromangerstickbloodglucosevalueandmaynot
represent the timeliest blood glucose value. Use a blood
glucosevaluetakenonlyfromangerstickforcalibration.
Alternative site blood glucose values might affect sensor
performance, and you might miss a low or high blood
glucose value.
• Do not discard your transmitter. It is reusable. The same
transmitter is used for each session until you have reached
the end of the transmitter battery life.