CGM features and fixes · Dexcom G7

Dexcom G7 compression lows

Pressure on the G7 sensor, for example lying on it, can affect readings. The sensor should recover once the pressure is gone; do not calibrate during it. (Dexcom user guide, p. 114; Dexcom user guide, p. 115; Dexcom)

What the maker says to do

1. Move so nothing presses on the sensor.
2. Do not calibrate while the reading may be off from pressure.
3. Pick sites you do not lie on while sleeping.

More on the Dexcom G7

• Follower app not updating
• Signal loss
• Sensor error
• Warm-up
• Sensor failed early
• Alarms not sounding
• Follower not getting alerts
• Compatible phones

Compression lows on other CGMs

• Dexcom G6
• Dexcom ONE+
• Dexcom Stelo

Sources, quoted

• Dexcom user guide, p. 114: “Pressure on sensor: Sometimes when something is pressing on your sensor, for example, if you’re lying on it, it can affect your sensor readings.”
• Dexcom user guide, p. 115: “Relieve pressure: Don't calibrate if the sensor reading seems inaccurate because of pressure on the sensor. The sensor should recover on its own when the pressure is relieved.”
• Dexcom: “That get bumped, pushed, or you lie on while sleeping.”

Every quote is checked against its source page before each update of this site; last checked 2026-10-06. Makers change their apps; the source page is the authority when it differs.