We’ve assembled the most frequently asked questions about Eversense into one place. Got a question that you can’t find the answer to? Contact us.
When you receive an Out of Range Glucose Alert, the sensor glucose value is below 40 mg/dL with LO displayed instead of a number, or above 400 mg/dL with HI displayed instead of a number.
Out of Range Low Glucose:
Appears when your glucose reading is lower than 40mg/dL.
No glucose reading can be displayed (only LO is displayed on the MY GLUCOSE screen).
Confirm your glucose value with a blood glucose meter test before making a treatment decision.
Once the sensor glucose value is at or higher than 40mg/dL, glucose readings will resume on the display.
Out of Range High Glucose:
Appears when your glucose value is higher than 400 mg/dL.
No glucose reading can be displayed (only HI is displayed on the MY GLUCOSE screen).
Measure your glucose manually by using your blood glucose meter. Always confirm your glucose value with a blood glucose meter test before making a treatment decision.
Once the sensor glucose value is at or lower than 400mg/dL, glucose readings will resume on the display.

Go to Main Menu > System Set Up > Help Me Set Up. Select the option of what you are trying to set up.
I have a new transmitter
When you receive a new or replacement smart transmitter and are ready to start using that transmitter, tap I have a new transmitter. Follow the prompts to begin the pairing process and link to your existing sensor. Once linking is complete, the system will be in initialization phase.
I have a new sensor
When you receive a new or replacement sensor, tap I have a new sensor to link the new sensor to your current smart transmitter. The system will begin the 24-hour Warm-Up Phase followed by Initialization Phase.
I have a new transmitter and sensor
When you receive a new or replacement sensor and a new or replacement smart transmitter, tap I have a new transmitter and sensor and follow the prompts. Once linking is complete, the system will begin the 24-hour Warm-Up Phase followed by Initialization Phase.
To ensure best performance, routine calibration is required using fingerstick readings from a blood glucose meter. DO NOT use alternative test sites such as your forearm when entering BG values for calibration. Any commercially available meter may be used for calibration. Once your sensor has been inserted and linked to your smart transmitter, the system begins a 24-hour Warm-Up Phase. No calibration is required during this phase.
There are three calibration phases:
Initialization Phase – After the 24-hour Warm-Up Phase, you must complete 4 fingerstick calibrations, spaced 2 to 12 hours apart.
1 Daily Calibration Phase – After the Initialization Phase, you must complete a fingerstick calibration every 24 hours for 13 days.
1 Weekly Calibration Phase – In the 1 Weekly Calibration Phase, you must complete a fingerstick calibration once a week.
On the Main Menu, tap Connect or System Setup > Help me set up > I have a new transmitter. Tap and hold the name of your old smart transmitter. Tap OK to stop the app from automatically connecting with the old smart transmitter. Forget the old smart transmitter from your phone’s Bluetooth settings.
On Day 1, no fingerstick calibrations are required for the first 24 hours.
Day 2 will require 4 calibrations within 36 hours for the initialization phase.
Then the Eversense® 365 requires one calibration per day from Day 3 through Day 13.
Beginning on Day 14, the sensor will only require one calibration per week thereafter for the life of the sensor.
The most recent 90 days of your glucose data is stored in the app. Uninstalling/re-installing the app will clear all the data from the mobile device and only the most recent three days’ worth of glucose data will be retrieved from the smart transmitter and stored in the app.
Still have questions?
The Eversense team is dedicated and ready to provide the answers and support you need. Simply click the link below.
The Eversense® 365 Continuous Glucose Monitoring (CGM) System is indicated for continually measuring glucose levels for up to one year in people (18 years and older) with diabetes. The system is indicated for use to replace fingerstick blood glucose (BG) measurements for diabetes treatment decisions. Fingerstick BG measurements are required for calibration one time a week after day 13, and when symptoms do not match CGM information or when taking medications of the tetracycline class. The sensor insertion and removal procedures are performed by a health care provider. The Eversense 365 CGM System is a prescription device; patients should talk to their health care provider to learn more.
For important safety information, see bit.ly/eversensesafety
Eversense, Eversense 365 Continuous Glucose Monitoring, and the Eversense logo are trademarks of Senseonics, Incorporated. All other trademarks are properties of their respective owners and are used solely for informative purposes. No relationship or endorsement should be inferred or implied.
Apple Watch® is a product of Apple, Inc., and may be separately purchased from an authorized Apple retailer. Apple Watch is not included with the Eversense CGM System. Android is a trademark of Google LLC.
MKT-001692 Rev 1