What Is the Dexcom G7?
The Dexcom G7 is a continuous glucose monitoring (CGM) system designed to provide glucose readings and alerts through a compatible display device, including a Dexcom receiver.
Instead of repeatedly checking glucose with a traditional blood glucose meter, a CGM sensor collects glucose information continuously and sends readings to the compatible display.
The system can help users understand glucose patterns and trends throughout the day.
For people who rely on a receiver rather than a smartphone, the Dexcom G7 receiver provides a dedicated way to view glucose information, alerts, trend arrows, and other system information.
When Should You Change a Dexcom G7 Sensor?
A standard Dexcom G7 sensor is indicated for up to 10 days, followed by a 12-hour grace period. Dexcom sends alerts as the sensor session or grace period approaches its end.
You can either:
- Replace the sensor before the grace period ends.
- Allow the sensor to automatically finish.
- End the current session early if necessary.
The receiver can guide you through the replacement process.
Can You Restart an Expired Dexcom G7 Sensor?
No. Dexcom states that a completed G7 sensor session cannot be restarted. A new sensor is required after the session and grace period have ended.
This is important because attempting to reuse an expired sensor may prevent you from receiving reliable glucose readings.
What You Need Before Changing Your Dexcom G7 Sensor
Before starting, gather everything you need so you do not have to interrupt the process.
You will generally need:
- A new Dexcom G7 sensor and applicator
- The Dexcom G7 receiver
- The new sensor's 4-digit pairing code
- An alcohol wipe
- The included overpatch
- A clean, appropriate sensor site
- Clean hands
The 4-digit pairing code is provided on the applicator for the new G7 sensor. Although G7 sensors are factory calibrated, the pairing code is still required to connect the new sensor to the receiver.
How to Change Dexcom G7 Sensor With Receiver
The replacement process can be broken into four main stages:
- End the current sensor session.
- Remove the old sensor.
- Insert the new sensor.
- Pair the new sensor with the receiver and complete warmup.
Let's go through each step.
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