Libre 2 sensor will be phased out at the end of August 2025.
Find out what you need to do >
Optional glucose alarms available for the Libre 2 or Libre 2 Plus sensor and the LibreLink app◊ or Libre 2 reader let your patients know the minute their glucose is too low or too high¤ and can be set individually according to your patients' needs.
5x more readings power up to 5x faster alarms4 that let your patients know the minute their glucose is too high or too low.¤
Optional glucose alarms are easy to turn on, easy to customise low and high glucose alarm ranges and easy to adjust sound and vibration.5
New Libre 2 users value the ability to control alarms — patients who switched from other CGMs saw a 44% increase in device use "all or almost all of the time".6,7 Other CGM users are 2x more likely to turn off their device* due to excessive alarms.6,7
When your patient chooses to get notifications through the LibreLink app◊, they can set up alarms so they can be alerted when their glucose reading goes above or below their target range.¤
When your patient receives a glucose alarm, they can open the LibreLink app or tap the Dismiss button to dismiss the alarm.
They can then use their glucose reading, trend arrow, and 8-hour history to take appropriate action as their Healthcare Professional advice.
It even works when they're sleeping or when their smartphone is in Do Not Disturb mode.¤
iPhone users who use Focus Modes will need to make sure Time Sensitive Notifications are turned ON for each focus mode.
Your patient will need to decide which device they want to receive their alarms on. This is an important first step as they can only receive alarms on the device they start their Libre 2 or Libre 2 Plus sensor with.
Once your patient has started their Libre 2 or Libre 2 Plus sensor with the LibreLink app,◊ they can follow the instructions below to receive alarms.
(Signal loss alarms automatically turned on when glucose alarm is turned on)
If your patient wants to receive alarms on the Libre 2 Reader, see the FreeStyle Libre 2 system user manual for information about setting up and using alarms.
To receive optional glucose alarms on their smartphone, your patient needs to make sure they have notifications enabled for the app. If they didn't enable all notifications and permissions during app set up, how they do it now depends on their phone's operating system.
Do not force close the App.
Check to make sure that you have the correct settings and permissions enabled on your phone to receive alarms.
Enable Bluetooth and allow the App to access Bluetooth.
Allow Notifications for the App. Turn on Lock Screen and Banner alerts, Notification sounds and general phone sounds or vibration. Make sure not to turn on any features or modify phone settings that may interrupt the presentation of notifications.
Turn off Do Not Disturb mode or select to turn on Override Do Not Disturb in your alarm settings. Do this if you want the alarm to always play a sound and appear on the lock screen even if your phone is muted or Do Not Disturb is on.
Note: You must accept the App's permission request for Critical Alerts to use this feature. You can also enable the Critical Alerts setting directly from the App's notification settings.
Enable Bluetooth and allow Nearby Devices permission for the App (Nearby Devices permission is required for Android 12 and above).
Do not force close the app.
Allow Notifications for the App. Turn on Lock Screen notifications, Notification sounds, Channel notifications, Sound and Pop-up notifications, and general phone sounds or vibration. Make sure not to turn on any features or modify phone settings that may interrupt the presentation of notifications.
Turn off Do Not Disturb mode or manage the settings for your alarms to override Do Not Disturb. Override Do Not Disturb functionality depends on the phone model and Android operating system version you are using.
Allow Alarms & reminders permission for the App. This permission is required for Android 12 and above.
Turn off Battery Optimisation for the App to allow the App to run in the background and ensure that you receive alarms, even when your phone has low battery. You may need to add the App to the list of apps that will not be put to sleep.
There are some things your patients can do to make sure they don't miss any glucose alarms:
References & Disclaimers
Images are for illustrative purposes only. Not real patient or data.
1. For full instructions please refer to the LibreLink User Manual.
2. 3.9 mmol/L is the default Low Glucose Alarm level and can be set between 3.3-5.6 mmol/L.
3. 13.3 mmol/L is the default High Glucose Alarm level and can be set between 6.7-22.2 mmol/L.
4. Dexcom G6 CGM User Guide and Medtronic Guardian Connect System User Guide.
5. Data on file, Abbott Diabetes Care, Inc.
6. Patient satisfaction and physician preferences reported for FreeStyle Libre 2, Dexcom G6/G5/G4, Eversense, Medtronic Guardian Sensor 3 and Enlite Sensor, and Medtrum A6TouchCare.
7. Varughese, B. Diabetes Stoffw Hertz 30 (2021): 231-242.
◊ The LibreLink app is only compatible with certain mobile devices and operating systems. Please check the website for more information about device compatibility before using the app. Use of LibreLink may require registration with LibreView.
¤ Notifications will only be received when alarms are turned on and the sensor is within 20ft unobstructed of the reading device. Users must have override do not disturb settings enabled to receive alarms and alerts on their smartphone.
* Compared to FreeStyle Libre 2 System.
The "Yes" link below will take you to a website other than Abbott Laboratories. Links to other websites are not under the control of Abbott Laboratories, and Abbott Laboratories is not responsible for the content of such websites or any link contained in such websites. Abbott Laboratories is providing these links to you only as a convenience, and the inclusion of any link does not imply endorsement by Abbott Laboratories of the site.
Do you want to leave this page?
If you're a healthcare professional located in a different country, please select your country's website from the list of our global sites or contact your local Abbott representative for correct information about the products available in your country.
If you're not a healthcare profressional, click here to go to the FreeStyle Libre consumer website for the UK.
.svg){kind=logo}
Stay connected