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Using your Dexcom G7 CGM System in these situations could result in errors in
diabetes management. Go to the Treatment Decisions chapter to find out more.
Some users found accuracy between different sensors varied. When you insert each
sensor, check if symptoms match your readings and pay attention to its accuracy
before deciding to use it for treatment decisions.
For more information on how to make treatment decisions using your Dexcom G7
CGM System, go to the Safety Information, Treatment Decisions, and Alerts chapters.
Acetaminophen interfering substance risks
With the Dexcom G7 CGM System you can take a standard or maximum
acetaminophen dose of 1 gram (1,000mg) every 6 hours and still use the sensor
readings to make treatment decisions. Taking higher than the maximum dose of
acetaminophen (e.g. > 1 gram every 6 hours in adults) may affect the sensor readings
and make them look higher than they really are.
Hydroxyurea interfering substance risks
Hydroxyurea makes your sensor readings look higher than they really are. How much
higher depends on the amount of hydroxyurea in your body. If you're taking
hydroxyurea, use your BG meter for treatment decisions.
Sensor insertion risks
In rare cases, inserting the sensor can cause infection, bleeding, or pain, and wearing
the adhesive patch can irritate your skin. In most patients, the adhesive reactions are
mild and resolve within a week. Only a few patients in the Dexcom G7 CGM System
clinical studies got slight redness and swelling. Although uncommon, some people get
a significant reaction from the sensor adhesive that may take weeks to resolve.
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2 • Safety Information |
Dexcom G7 User Guide
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Do you have a question about the G7 and is the answer not in the manual?
Questions and answers
Dexcom G7 continues to show readings 50 or 60 points higher than when I stick my finger and use the supplied recorder. Why?
The Dexcom G7 may show readings 50 or 60 points higher than fingerstick measurements due to several reasons:
1. Sensor's First Day: Newly inserted sensors may show larger differences, which usually decrease over the first 24 hours.
2. Pressure on Sensor: If something is pressing on the sensor (e.g., lying on it), it can affect readings. Removing the pressure can help.
3. Rapid Glucose Changes: Blood glucose changes before interstitial fluid glucose, so fast changes can cause differences between meter and sensor readings.
4. Fingerstick Issues: Inaccurate fingerstick readings can occur if hands are not washed properly or test strips are expired or used incorrectly.
These factors can cause temporary differences between Dexcom G7 and fingerstick readings.
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How high does the Dexcom 7 reciever go?