How do I replace my sensor?

The app will guide you through the necessary steps to apply your new sensor, insert your transmitter, and begin the warmup process. The sensor is replaced every 10 days and the transmitter is replaced every 90 days; we'll remind you when it's time to replace each. This means you may go through 9 sensors before replacing a transmitter.

Follow these steps to successfully set up a new sensor: 

1. Remove the transmitter and sensor

The app will send reminders leading up to the 10th day and then a final reminder when it’s time to replace your sensor on day 10. Remove it just like you would remove a bandaid.The transmitter, and sensor all come off with the patch. 

NOTE: If you remove your sensor any amount of time before it expires, it is critical to stop your sensor manually by going to Settings > CGM > Dexcom G6 (sensor)>Stop Sensor.

2. Separate the transmitter and the sensor

You will remove the transmitter from the sensor clear plastic cradle after you’ve peeled the patch off your skin. To do so, grasp the wide, rounded edge of the plastic cradle. Bend the cradle edge sharply down to break it and release the transmitter.

Pull the transmitter straight out. You will keep this for use as it lasts 90 days, enough for roughly nine sensors.

3. Prepare to connect a new sensor with the existing transmitter

Keep the transmitter to use with the next sensor, and throw away the used sensor and sports cover.

Reset transmitter:

Let your transmitter rest separated from any sensor for at least 15 minutes before connecting it to your new sensor to let it reset.

4. Place your new sensor

The app will guide you through applying your new sensor, connecting your transmitter, and beginning the warmup process.

Note: Be sure to place the squared tip of the gray transmitter into the sensor cradle first, ensuring that this tip inserts into the slot for it before then pressing the rest of the transmitter into the sensor cradle firmly and listening for two clicks. Check out How to Place a CGM for more information and best practices.