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Switching From Libre Sensors to Dexcom Sensors
Switching From Libre Sensors to Dexcom Sensors
Updated over 3 weeks ago

If you were previously setup with Theia with Libre sensors and have now switched to Dexcom sensors, you will need to follow the steps below:

1. Download the App:

2. Create an Account or Log In:

  • Open the app and follow the prompts to create a new account or log in if you already have created a login.

3. Link Dexcom app & Theia

  • Head over to the CGM Connect page in Theia and enter your Dexcom email and password.

4. Prepare for Application (Once your sensor is received)

  • Choose the right location: The Dexcom G7 sensor is applied to the back of your upper arm.

  • Clean the area: Use an alcohol wipe to clean and disinfect the application area. Allow it to dry completely.

5. Apply The Sensor

  • Open the Sensor Applicator.

  • Remove the sensor applicator from its packaging.

  • Peel off the adhesive backing from the applicator.

  • Place the applicator flat against your skin at the chosen site.

  • Press the button on the applicator to insert the sensor.

  • You may hear a click as the sensor is applied.

  • Gently lift the applicator away from your skin, leaving the sensor in place.

6. Activate the Sensor

  • Activate the sensor: Open the Dexcom app and follow the instructions to scan your new sensor. You’ll need to hold your smartphone close to the sensor to start it.

  • Wait for the warm-up period: The sensor will take about 60 minutes to calibrate before it begins transmitting glucose data.​

7. Monitor Your Glucose Levels

  • Log Activities:Log your activities in Theia to correlate inputs with your body's reactions.

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