CGM features and fixes · Dexcom G6

Dexcom G6 compression lows

Something pressing on the sensor, such as lying on it at night, can make G6 read low when your meter does not. Readings should come back closer once the pressure is gone. (Dexcom)

What the maker says to do

1. Check with your meter if a night low does not match how you feel.
2. Move so nothing presses on the sensor.
3. Next time, pick a site you will not lie on while sleeping.

More on the Dexcom G6

• 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 G7
• Dexcom ONE+
• Dexcom Stelo

Sources, quoted

• Dexcom: “One explanation may be that something is pressing on your sensor which can affect your Dexcom G6 readings.”
• Dexcom: “Once the pressure is relieved, your Dexcom G6 readings should be closer to your blood glucose meter.”
• Dexcom: “Choose a sensor site location that won't be bumped, pushed, or laid 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.