Dexcom G4 User Manual page 5

carefully performed blood glucose measurement. Entering
incorrect blood glucose values or blood glucose values
from more than 5 minutes before entry might affect sensor
performance, and you might miss a low or high blood
glucose value.
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Do not calibrate when your receiver screen is showing the
rising single arrow or double arrow, which indicates that
your blood glucose is rising 2-3 mg/dL/min or more than
3 mg/dL/min. Also, do not calibrate when your receiver
screen is showing the falling single arrow or double
arrow, which indicates that your blood glucose is falling
2-3 mg/dL/min or more than 3 mg/dL/min. Calibrating
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accuracy of sensor glucose readings.
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more than 3 mg/dL each minute), such as during exercise
or after a meal.
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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.
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the USB cable is not attached. If water gets into the
Dexcom G4 PLATINUM User's Guide | 23
2
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.
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from your palm or forearm, etc.) for calibration. Alternative
site blood glucose values may be different than those
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represent the timeliest blood glucose value. Use a blood
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Alternative site blood glucose values might affect sensor
performance, and you might miss a low or high blood
glucose value.
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transmitter is used for each session until you have
reached the end of the transmitter battery life.
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Receiver are not compatible with the SEVEN/SEVEN
PLUS Transmitter and Receiver. Different generations will
not connect with each other and will not work. Also make
sure to use the correct version of Dexcom Studio with
your system.
2.6 CAUTION
U.S. (Federal) law restricts the sale of the Dexcom G4
PLATINUM System to sale by or on order of a physician.
24 | Dexcom G4 PLATINUM Continuous Glucose Monitoring System