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Frequently Asked Questions

What is the FreeStyle LibreLink mobile app?

The FreeStyle LibreLink app enables you to scan your sensor with your iPhone or Android phone25 so you can monitor your glucose without routine finger pricks.1

With the app you can:

  • View your current glucose reading, a trend arrow, which indicates how your glucose is changing, and the last 8-hours of glucose history
  • See glucose reports, including your Ambulatory Glucose Profile, which reveal trends and patterns
  • Add notes to track your food, insulin use, exercise, and other events
  • Connect to healthcare professionals and caregivers with LibreView and LibreLinkUp

Which devices work with the FreeStyle LibreLink App?

The FreeStyle LibreLink App is only compatible with certain mobile devices and operating systems. Please check our compatibility guide for more information about device compatibility before using the App.

How do I scan my FreeStyle Libre Sensor with my phone?

Android:

After you’ve applied a FreeStyle Libre Sensor to the back of your upper arm, open the app and hold the back of your Android phone near (exact distance will vary by phone) the FreeStyle Libre Sensor to scan it. The size and location of the NFC antenna in Android phones varies by make and model, so you may have to move the phone around to find the best position for scanning the FreeStyle Libre Sensor.

Once you have found the optimal scan position, wait for the app to produce two distinct tones or vibrations before you move the phone away from the FreeStyle Libre 2 sensor. The first tone indicates the phone’s NFC has recognized the sensor. The second tone indicates the scan is complete. :

iPhone:

After you’ve applied a FreeStyle Libre sensor to the back of your upper arm, open the App and tap one of the scan buttons within the app to put the iPhone in a scan ready state. There are two types of scan buttons – a blue button on the Home screen and a gray scan icon in the top right corner of most screens. Hold the top edge of your iPhone near the sensor and do not move your iPhone until you hear a tone and/or feel a vibration, which indicates the scan is complete. :

What is near-field communication (NFC) and how do I know if my phone has it?

NFC is the wireless communication technology that enables your FreeStyle Libre sensors to wirelessly transmit data to another device.

For Android users: Your Android phone must have NFC capabilities and NFC must be enabled. Many of the latest Android phones support NFC. Check your phone's manual or go to the phone’s Settings menu and look for settings related to ‘NFC’, ‘Connections’, ‘Sharing’, or ‘Wireless & Networks.’

For iPhone users: You must have an iPhone 8 or higher/iOS 15.5  or higher to utilize the NFC capability needed to scan the FreeStyle Libre sensor.

Can the App replace my FreeStyle Libre Reader?

Yes. The App was developed using the same technology that is in the FreeStyle Libre Reader for receiving and processing glucose data, so it can also be used for routine monitoring. The App can be used instead of or in combination with the FreeStyle Libre Reader for routine monitoring.

A finger prick test using a blood glucose meter is required during times of rapidly changing glucose levels when interstitial fluid glucose levels may not accurately reflect blood glucose levels, or if hypoglycemia or impending hypoglycemia is reported or the symptoms do not match the system readings.

Do I have to remove the case on my phone to scan the sensor?

You may or may not have to remove your phone case – it depends on the material that the case is made from, how thick the case is, and how well your phone’s NFC antenna works. If your phone case is made from plastic or silicone or another non-conductive material, you will probably be able to scan the sensor without removing the case. If the case is aluminum, metal or anything else that has a conductive surface, you may need to remove the case before scanning your sensor.

The thickness of the case can also make a difference. If your case is very thick, it could prevent the phone from scanning the sensor.

Do I need to carry a separate blood glucose meter?

There’s no need to use a separate blood glucose meter for routine testing.25 The App allows you to get glucose results as often as you like by simply scanning your FreeStyle Libre sensor with your phone.

However, a finger prick test using a blood glucose meter is required during times of rapidly changing glucose levels when interstitial fluid glucose levels may not accurately reflect blood glucose levels, if hypoglycaemia or impending hypoglycaemia is reported by the Sensor, or when symptoms do not match the sensor readings.

Can I use my FreeStyle Libre reader and FreeStyle LibreLink App with the same sensor?

You can choose to monitor your glucose levels with either the App, the reader, or both.26 You can use the FreeStyle LibreLink App and the FreeStyle Libre reader with the same sensor, as long as you start the sensor with the reader first, and then scan the newly started sensor with your phone.

Remember that the FreeStyle LibreLink App and FreeStyle Libre readers do not share data with each other. For example, if you switch between your reader and the app, you may see gaps in your glucose data, which will affect the reports available through the reader, the FreeStyle LibreLink App, and LibreView. It is important to continue scanning your sensor with either the App or the reader at least once every eight hours so you and your healthcare professional can get a complete picture of your glucose trends and patterns.

Can I use the FreeStyle LibreLink App to scan someone else’s sensor?

The FreeStyle LibreLink App is intended to be used with only one sensor (and one person) at a time. Each app account is associated with one person. However, people who use the FreeStyle LibreLink App can connect with their caregivers if they are using a separate App called LibreLinkUp. LibreLinkUp allows caregivers to remotely monitor glucose readings performed by their love ones.

Can the FreeStyle LibreLink App be used to make insulin dosing decisions?

Yes. People with diabetes can use FreeStyle Libre sensors with the app to better understand the impact of actions like eating, exercise, and taking insulin based on their glucose levels. They can also make day-to-day therapy decisions when using the app with a FreeStyle Libre sensor, including insulin dosing decisions, based on guidance from their healthcare professional.

Will the FreeStyle LibreLink App work in ‘airplane mode’?

Yes. If you use an Android phone, you may need to go to your phone’s settings and reactivate NFC when your phone is in airplane mode. You can scan with your iPhone in airplane mode by tapping one of the scan buttons in the App to put it in a scan ready state.

What if I don’t have phone service or Wi-Fi?

Wi-Fi or a mobile data connection are only required for initial app setup (downloading / installing the app, creating an account, or signing in) and sharing your glucose information with your care team or with other connected apps. The app does not require a Wi-Fi or a mobile data connection to scan your sensor or to record your current glucose readings. During periods when your phone is operating in a disconnected state, your data will only be uploaded to LibreView after a Wi-Fi or mobile data connection is restored.

Does the FreeStyle LibreLink App cause my phone battery to deplete more quickly?

No, the FreeStyle LibreLink App is meant to be used as often as you like and should not have a noticeable effect on battery life beyond your normal usage patterns.

What happens if my phone battery dies?

If your phone battery dies, charge your phone to continue using the FreeStyle LibreLink App. Your data will not be lost if the phone battery dies and you can scan the sensor while the phone is being charged.

Can I use the FreeStyle LibreLink App on a rooted or jailbroken phone?

The FreeStyle LibreLink App is not supported on rooted Android phones or jailbroken iPhones.

How do I retrieve my password if I forget it?

After installing the FreeStyle LibreLink App, tap Sign In. Then, tap Forgot Password. Enter the e-mail address that was used to create the account and follow the on-screen instructions. You will receive an e-mail with a link to reset your password. Follow the link to create a new password, then sign into your account using your new password.

How do I download the FreeStyle LibreLink App?

Android users can download the FreeStyle LibreLink App from the Google Play Store. iPhone users can download the FreeStyle LibreLink App from the Apple App Store. Please note that the App may not be available for download if the App is not approved for use in your country or your phone is not compatible with the App.

What happens when I travel to different time zones, or when my phone changes time?

The App will display a clock icon on the glucose graph to indicate when there has been a time change. It is necessary to use the correct time for accurate reports. If your phone’s time is not set to update automatically, you will need to update your phone’s time settings in order to continue using the App.

What are the differences between the FreeStyle LibreLink App and the FreeStyle Libre reader?

  • Sharing: Reports in the FreeStyle LibreLink App can be shared directly from the phone. You can connect the reader to the computer with a USB cable to upload data.
  • Viewing: The reader features a simple color touchscreen. Graphs are displayed in more color and higher resolution in the App.
  • Notes: You can add notes in the reader within 15 minutes of a glucose reading. The App allows you to add and view notes at any time in the Logbook.
  • Text to Speech: If enabled in the App, you can hear the glucose reading with the unit of measure and trend arrow direction after each scan.
  • Reports: The reader and the App use the same calculations to create glucose reports. Compared to the Reader, reports in the App will have more color, details, and interactivity. The App can also display an estimate of your A1c, in addition to basic stats about your glucose history in the last 24 hours.
  • Reminders: The App allows you to easily set custom reminders, as well as an 8-hour timer that resets every time the sensor is scanned. App notifications on your phone must be enabled to see reminders.
  • Other: The reader has a port for test strips, so it can be used both for scanning sensors and blood glucose readings.

How do I access my glucose reports?

The App includes a series of reports that highlight your glucose trends and patterns. From the main menu select the report you wish to see.

What reports are available in the App?

  • Daily Patterns: A graph showing the pattern and variability of the sensor glucose readings over a typical day. Includes the median, 25th -75th percentile, and 10th-90th percentile range of the glucose readings.
  • Time in Range: A graph showing the percentage of time the sensor glucose readings were above, below, or within the Target Glucose Range.
  • Low Glucose Events: Information about low glucose events measured by the sensor. A low glucose event is recorded when the sensor glucose reading is lower than 70mg/dL(3.9 mmol/L) for longer than 15 minutes.
  • Average Glucose: Information about the average sensor glucose readings for different periods of the day.
  • Daily Graph: A graph of the sensor glucose readings by day.
  • Estimated A1c: Estimate of A1c (HbA1c) based on sensor glucose data from the last 90 days. A1c can be used as an indicator of how well glucose levels have been controlled and may be used to monitor a diabetes treatment regimen.
  • Sensor Usage: Information about how often the sensor is scanned.

How many readings are required to estimate A1c?

A minimum of 5 days of sensor data is required for an estimated A1c to be calculated.

How can I share my glucose data with my healthcare professional?

E-mail or text reports directly from the App by tapping the share icon that’s displayed at the bottom of each report available within the App. You can also show the reports on your phone to your doctor or nurse during your next appointment. LibreView may also be an option if your doctor has set it up for patients to share data (for more information visit www.LibreView.com).

Why do I need to create a LibreView account to use the FreeStyle LibreLink App?

LibreView is used to manage your account information and enables detailed reporting and data sharing. Once the App is installed and you accept the terms of use, you will need to create a LibreView account in order to start using the App. LibreView allows you to share your glucose data with your healthcare professional and other apps that connect with FreeStyle LibreLink App.

What kind of information does the App collect and what happens with that information?

The App stores your account information, glucose data, notes, and sensor information within the App on your phone, so it is your responsibility to limit access to your phone to protect personal information. The App also automatically uploads this data in LibreView, a secure cloud-based data repository. Please read the Privacy Notice for more information.

Is my data safe? What will Abbott do to protect patient data?

Abbott and its partners comply with all applicable data protection and privacy laws in users' jurisdictions. Please read the End User License Agreement and Terms of Use or the Privacy Notice within the App or at freestylelibre.com to ensure that you are comfortable with the data handling practices that govern the use of the App and LibreView; otherwise, you should not install the App.

What happens if I lose or change my phone?

If you lose your phone, download the App again on a compatible phone and sign in with your account information. If you have an active sensor and need to reinstall the App, when you sign into your existing account, you can continue using your active sensor until the end of its useful life. You will not be able to view historical data in the new installation of the App, but this data will be available in LibreView.

System Components

What components are included in the FreeStyle Libre system?

The FreeStyle Libre system has two main parts: a handheld reader and a disposable Sensor, which is worn on the back of the upper arm. The user wirelessly scans the Sensor with the reader to get glucose readings.

  • The small, disposable Sensor is worn on the back of the upper arm and continuously measures glucose for up to 14 days
  • The compact, handheld reader displays a current glucose reading, 8-hour history, an arrow showing the direction in which the users glucose is heading and stores up to 90 days of glucose data.* The user can also view reports on the reader as well as enter notes.

*Based on the Sensor being replaced once every 14 days and scanned once every 8 hours.

What kind of cleaning or disinfection procedure is required to use the FreeStyle Libre system?

The Sensor is intended for single-use and does not require cleaning and disinfection. You may clean the reader using a cloth dampened with a mixture of 1 part household bleach to 9 parts water. Gently wipe the exterior of the reader and allow to air dry.

Does the FreeStyle Libre system contain latex?

The FreeStyle Libre system does not contain any latex (other questions about adhesive, Sensor content should be directed to Scientific Affairs).

I’m traveling – can I get a Sensor from a different country? Will it work with my reader?

The FreeStyle Libre reader/sensor is only compatible with the FreeStyle Libre sensor / reader purchased through Abbott official stores / authorized stores or dealers in India. If you are travelling, it is advisable to ensure that you take enough Sensors with you to last the duration of your trip.

Accuracy

How accurate is the FreeStyle Libre system?

The FreeStyle Libre system has been clinically proven to be accurate, stable, and consistent over 14 days. It does not require finger prick calibration and may be used in place of routine finger prick glucose testing.1*

1Bailey, et al. The Performance and Usability of a Factory-Calibrated Flash Glucose Monitoring System. Diabetes Technology & Therapeutics, Volume 17, Number 11, 2015.

*A finger prick test using a blood glucose meter is required during times of rapidly changing glucose levels when interstitial fluid glucose levels may not accurately reflect blood glucose levels or if hypoglycemia or impending hypoglycemia is reported by the system or when symptoms do not match the system readings.

What substances could interfere with the results generated by the FreeStyle Libre system?

  • Use of products containing ascorbic acid and salicylic acid on the Sensor location may interfere with the Sensor glucose readings.
  • Taking ascorbic acid while wearing the Sensor may falsely raise the Sensor glucose readings.
  • Taking salicylic acid may slightly lower the Sensor glucose readings.
  • In either case, the level of inaccuracy depends on the amount of the interfering substance active in the body.

Is the accuracy of the Sensor consistent over the 14-day wear period?

Yes, the accuracy of the Sensor remains consistent for up to 14 days. The FreeStyle Libre system is clinically proven to be highly accurate, stable, and consistent over 14 days with no finger prick calibrations

What is the LibreLinkUp App and how does it work with the FreeStyle LibreLink App?

LibreLinkUp is a companion App to the FreeStyle LibreLink App, which allows glucose readings to be automatically shared with your caregivers in real-time. Both you and your caregiver must have a network connection to share and receive glucose readings. To add a LibreLinkUp connection through the FreeStyle LibreLink App, simply tap Share in the main menu and follow the on-screen instructions.

What is LibreView and how does it work with the FreeStyle LibreLink App?

LibreView is a cloud-based diabetes management system provided by Abbott and Newyu, Inc. LibreView provides a secure repository for data from your FreeStyle LibreLink App, and allows you to easily share your glucose data with your healthcare professional or others, if you wish. Data is automatically28 uploaded to LibreView when your phone is connected to the Internet.

Why do I need to create a LibreView account to use the FreeStyle LibreLink App?

LibreView is used to manage your account information and enables detailed reporting and data sharing. Once the App is installed and you accept the terms of use, you will need to create a LibreView account in order to start using the App. LibreView allows you to share your glucose data with your healthcare professional and other apps that connect with FreeStyle LibreLink App.

What do I need to do to access LibreView?

LibreView lets you create clear, easy-to-understand glucose reports, and allows you to share them with your healthcare professional. LibreView is free and only takes a few minutes to sign up and get started.

To use LibreView, you will need to connect the glucose device to any Windows PC or Mac computer with an Internet connection. Log in with your credentials and then follow the on-screen instructions to upload data.

Your glucose data is stored securely in LibreView, through which you can also share it with your healthcare professional.

Note: If you are using FreeStyle LibreLink to monitor your glucose, your data is automatically uploaded to LibreView every time you scan your FreeStyle Libre sensor.

LibreView LDD Update Available Moda

How does the update to the LibreView Device Driver (LDD) modal work?

When a user clicks on the Upload a Device, 1-Time Report or Report Linked to Patient upload options, LibreView will check if the user is on the most current version available of the device drivers. If the user is on an older version of the device drivers, the Update Available modal will appear notifying the user that a new version is available for download.

Will users be required to update their LibreView Device Drivers to the latest version available?

No. Users can continue to use the current LDD installed on their computer(s). However, we do recommend that users keep their LDD updated to the latest version available.

What LDD update options are available?

There are three options.

1. Download the update

  • Allows the user to download the latest version for Windows and Mac

2. Do not remind me again

  • If clicking this option, the “LDD Update Available” modal will not display again until a new version of the LDD is available for download.

3. Remind me Later

  • If clicking this option, users will be reminded of an available LDD update again in 7 days after clicking the “Remind me Later” option.

4. Are Local Admin rights required to download and install the LDD?

  • Downloading and installing the LDD may require Local Administrator permissions for their computer(s) to proceed with the installation.
  • Users should contact their IT department or computer administrator for assistance with downloading and installing the LDD if they do not have local admin permissions on the computer.

5. Where can I locate the LibreView Device Driver file to download?

  • If you’re logged into your LibreView account, you can access the LibreView Device Driver (LDD) download link on the “Upload a Device” screen. Additionally, the LDD download link can be found on the LibreView support sites listed below:

Professional Support:

https://pro.libreview.io/articles/meter-drivers

Patient Support:

https://pat.libreview.io/articles/meter-dr

LibreView 2-Factor Authentication Enhancements

What are the new 2-Factor Authentication (2FA) enhancements?

The LibreView 2FA enhancements include the following:

  • Trusted Devices – Allows users to complete and save 2FA on up to 5 devices
  • Rolling 14-days of activity per trusted device – Users will need to log into LibreView using their trusted device at least once every 14 days, otherwise the device will be forgotten, and users will be required to complete 2FA again.

How does the “Remember this browser and device for 14 days” option work when completing 2FA?

When you select the “Remember this browser and device for 14 days” box, this will add the computer/browser you’ve logged into LibreView with to your Trusted Devices list.

  • To keep a device on the trusted list automatically, users will be required to log into LibreView on their Trusted Device(s) once every 14 days. If more than 14 days have passed since the last login using the trusted device, the device will be forgotten, and users will be required to complete 2FA upon their next login.

How many Trusted Device(s) can be saved to your LibreView account?

Users can trust up to 5 devices/browsers per LibreView user credentials.

What is the “Nickname” field used for?

Yes. The nickname field is required to add a Trusted Device to your LibreView account. Users must create a nickname that includes 1-40 letters and numbers and can include spaces.

Are there any requirements in adding a nickname?

Yes. Users must create a nickname that includes letters or numbers. The nickname must contain between 1 and 40 characters and can include spaces.

What happens if I don’t select the Remember me button when completing 2FA?

If you do not select the Remember Me box, users will be required to complete 2FA each time they log into LibreView using that device.

Is it possible to rename a trusted device?

To rename a device, users need to remove the trusted device from their Account Settings in LibreView and complete 2FA the next time they log into LibreView with that device.

How often will I be prompted to complete 2FA?

Users will not be prompted to complete 2FA for a trusted device if the user logs into LibreView using the trusted device(s) once every 14 days.

Is it possible to view which devices have been trusted?

Yes. Users can view their Trusted Devices under Account Settings; Profile; Trusted Devices. Each trusted device(s) will display the nickname and a timestamp for the last login associated with the device.

What happens if more than 14 days have passed since I last logged into LibreView using a trusted device?

If more than 14 days have passed since your last login using a trusted device, LibreView will remove the device from your Trusted Devices list, and you will be required to complete 2FA the next time you log in using that device.

What happens when I reach the 5 Trusted Devices limit when completing 2FA?

Adding a sixth device to your Trusted Devices list will automatically remove the oldest device (based on the timestamp of last login) from your Trusted Devi

What will cause 2FA to reset, and will it require me to re-authenticate?

The following actions will require users to complete 2FA:

  • Resetting your account password
  • Not selecting “Remember me” when completing 2FA
  • Clicking Remove or Remove all devices from 2FA
  • Clearing your browser cache
  • Changing your phone number or email address
  • If more than 14 days have passed since last login on a Trusted Device

Is it possible to remove a trusted device from my account?

Yes. Users can remove Trusted Devices from their account by following the steps below:

  • Log into LibreView
  • Click the Settings Menu
  • Click Account Settings
  • Under Profile 2-Factor Authentication click Remove next to a specific device or Remove All Trusted Devices

If I remove a trusted device from my account, will that immediately log me out of LibreView?

No. If a user is logged into LibreView on a trusted device, that user will be able to continue to work until they sign out of their account. Once they sign out, they will be prompted to complete 2FA upon their next login.

What happens if I update my 2FA methods in my LibreView account?

Updating your 2FA methods will remove all trusted devices associated with your LibreView account and will require 2FA upon their next login.

LibreView Support Updates

Are there any new enhancements to the LibreView Support Site?

Yes, see changes below.

  • Compatible Devices page updated to only display commercially available devices in that country
  • Release Notes updated to reflect LibreView 3.12 Release
  • Labeling symbols added to the Professional and Patient Quick Start Guides

How is the sensor applied to the body?

The sensor is applied to the back of the upper arm with a simple, disposable device called an applicator. When the sensor is applied, a small (5mm) filament is inserted just under the skin, and held in place with a small adhesive pad. Most patients don't feel pain6 when applying the FreeStyle Libre sensor.

How big is the sensor?

The sensor is 5mm in height and 35 mm in diameter.

When applying the sensor to my arm, do I need to stretch or pinch the skin?

No. Apply sensors only on the back of your upper arm. Avoid areas with scars, moles, stretch marks, or lumps. Select an area of skin that generally stays flat during normal daily activities (no bending or folding). Choose a site that is at least 2.5 cm (1 inch) away from an insulin injection site. To prevent discomfort or skin irritation, you should select a different site other than the one most recently used.

What if I have a hairy arm and have trouble applying the Sensor?

The site selected on the back of the upper arm should be clean-shaven.

Can the sensor be applied to tattooed skin?

Yes, there is no interaction expected between tattoo ink and the sensor. It is advised to avoid areas with scars, moles, stretch marks or lumps when applying the FreeStyle Libre sensor.

Can the sensor be used at altitudes > 10,000 feet (3,048 meters)?

Sensor performance has been tested to 10,000 feet (3,048 meters) only and is not indicated for use in altitudes > 10,000 feet (3,048 meters). It is not indicated for use above 10,000 feet (3,048 meters).

What happens if the sensor is worn beyond 14 days?

The sensor automatically stops collecting glucose data and should be removed 14 days after being started.

Will the user feel the sensor while wearing it?

The portion of the sensor that gets inserted under the skin is less than 0.4 millimeter wide (1 mm is about the thickness of a few strands of human hair) and it’s inserted only about 5 mm under the skin, so most people will not feel the sensor while it is being worn

Should the sensor be removed if there is bleeding?

If there is bleeding that does not stop, remove the sensor, and apply a new one at a different site.

Is it necessary to apply a sensor in a different location if I feel discomfort or in case of a mis-application?

To prevent discomfort or skin irritation, you should select a different location other than the one most recently used.

What are the potential skin reactions with the sensor?

Some individuals may be sensitive to the adhesive that keeps the sensor attached to the skin. If you notice significant skin irritation around or under your sensor, remove the sensor. Contact your healthcare professional before continuing to use the FreeStyle Libre system.

What do I do if there is bruising around my sensor?

Applying the sensor may cause bruising or bleeding. If there is bleeding that does not stop, remove the sensor, and apply a new one at a different site.

Can users bathe, shower, swim or exercise while wearing a sensor?

Yes. The sensor can be worn while bathing, showering, swimming or exercising. The sensor should not be taken below 1 meter of water (3 feet), and should not be submerged in water for more than 30 minutes. The adhesive is designed to keep the sensor securely and comfortably in place for up to 14 days.

Is there any problem with the sensor if you sweat a lot?

Intense exercise may cause your sensor to loosen due to sweat or movement of the sensor. If your sensor comes loose, you may not get readings or have unreliable readings, which may not match how you feel. If this should happen apply and start a new sensor.

Can an over-bandage be used with the sensor?

Medical grade adhesive bandage or tape can be used. When using an over-bandage, it must be applied at the time of sensor application. The opening/hole in the center of the sensor must not be covered. Additional bandages/tape can be applied but do not remove bandages/tape once applied until sensor is ready for removal.

How long can the sensor be worn?

The disposable sensor is designed to adhere to the back of the upper arm and provide accurate glucose readings for up to 14 days. After 14 days, the user removes the sensor by peeling off the adhesive pad.

Would the sensor’s life be the same if the time on the reader is changed? 
 For example, if someone is travelling and needs to go forward in time for 6 hours, would the sensor end 14 days minus 6 hours?

No, the wear time of the FreeStyle Libre sensor is not impacted by the clock setting on the FreeStyle LibreLink App. The timer used for wear duration in the FreeStyle Libre sensor is independent of clock time on the FreeStyle LibreLink App.

How do you remove the sensor?

Pull up the edge of the adhesive that keeps your sensor attached to your skin. Slowly peel away from your skin in one motion. Note: Any remaining adhesive residue on the skin can be removed with warm soapy water, baby oil, or isopropyl alcohol.

What if the user needs to remove the sensor before 14 days (or if it falls off)?

A sensor that has been removed or that has fallen off cannot be reused. Users should replace the sensor and start a new sensor. The reader will identify that it is a new sensor and ask users if they want to start it.

What happens to the sensor after the 14-day wear period?

After 14 days of wear, the FreeStyle LibreLink App notifies the user that the sensor has ended. The sensor automatically stops collecting glucose data and should be removed. The FreeStyle LibreLink App displays the number of days before the sensor ends. Three days before the Sensor ends, it tells users with the first scan of each day. In the final 8 hours, it tells users with each scan that the sensor should be replaced with a new sensor.

Can users get a glucose reading through their clothing?

Yes, users can get glucose readings even through clothing by scanning FreeStyle LibreLink App over the sensor. FreeStyle LibreLink App can capture data from the sensor when it is within 1 cm to 4 cm of the sensor.

How many glucose readings can be taken while the sensor is being worn?

Users can take as many glucose readings as they want while the sensor is being worn. In order to get a 24 hour glycemic picture users need to scan at least once every 8 hours. The value is updated every minute.

How frequently does the sensor capture and store glucose readings?

The FreeStyle Libre sensor automatically reports the glucose concentration in the interstitial fluid every minute. It also automatically records the glucose concentration every 15 minutes, storing that data in a rolling 8-hour log.

When I scan my sensor, the FreeStyle LibreLink App says “Sensor Ended” but I have not worn my sensor for 14 days yet?

If for any reason the sensor stops working, please call Customer Service at 1800 2100 998 or email us at adc-cs.in@abbott.com.

Operational Hours: Mon-Fri from 8:30am - 5:30pm (business days only; no operations on holidays)

What happens to the sensor if it is worn outside of the recommended temperature range?

If the sensor stops working due to extreme temperature, the user will get an error message indicating ‘Glucose Reading unavailable’. The FreeStyle Libre operating temperature range is 10°C to 45°C.

Can the FreeStyle Libre system be used during a flight?

If restricted by flight regulations, we recommend that mobile phones / FreeStyle Libre Reader be powered off during a flight and not used for scanning a sensor. Aviation regulations dictate that a flight crew may decide that they do not want any electronic devices powered on during a flight regardless of device. In general, the FreeStyle Libre system is not restricted by flight regulations and can be used since it meets the RTCA guidance of use of medical devices on planes.
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What is the shelf life of the sensor?

Please refer to sensor packaging for the expiry date. If customer has multiple sensors, they should use the shortest date first.

Does the expiration date indicate the last day the user can apply the sensor or the last day it can be used?

The expiration date indicates the last day you can use the sensor. Do not use the sensor past the expiration date. If your sensor expires during the 14-day wear, start a new sensor before the sensor expires.

During what situations/scenarios would one get "Check Sensor" messages?

The Check sensor message occurs when the user tries to check glucose and the sensor does not seem to be “active”. This usually means that the sensor has come loose or has not been applied properly. If it appears to be applied properly, the user should try starting it again. This message will not appear once a glucose result appears.

What can I do during sensor application and wear to help keep my FreeStyle Libre sensor in place?

There are a number of steps and recommendations that can help with sensor adhesion. You can learn more by viewing our Adhesion Guide.

View Adhesion Guide

Why does the system require a one-hour warm up period?

Abbott’s Diabetes Care Division is committed to making its products safe for the user. Soon after the insertion of a sensor, there are physiological processes that happen as the sensor and the body equilibrates. These processes are part of the body's natural response to the sensor insertion. The equilibration process can vary from one person to another and may not always happen in the same manner for any one person. Therefore, we have decided to let the system equilibrate for 1 hour to ensure that the system is providing accurate glucose readings.

Where should the FreeStyle Libre sensor be applied to a child or young person?

The FreeStyle Libre sensor is approved for use on the back of the upper arm.

Do users have to remove the sensor during MRI/CT scan?

If the user has a medical appointment that includes strong magnetic or electromagnetic radiation, for example an X- ray, MRI (Magnetic Resonance Imaging), or CT (Computed Tomography) scan, they need to remove the sensor they are wearing and apply a new sensor after the appointment. The effect of these types of procedures on the performance of the system has not been evaluated.

How frequently does the reader need to be recharged?

There is a battery icon on the reader which will indicate battery life. With normal use, the reader can be used for approximately 7 days before it needs to be recharged. A low battery warning will appear on the reader when it needs to be recharged. A low battery message accompanies a result when users have enough charge remaining for about one day of use. Users can scan their sensor when the battery is low and when charging the reader.

Can the reader be used while charging?

The reader can be used while charging via an electrical outlet but cannot be used while charging via a computer. The ability to perform a blood glucose test via a test strip is disabled when the FreeStyle LibreLink App is connected via the USB cable and adapter.

What happens if the reader runs out of power? Do you lose glucose readings if the reader runs out of power?

The reader needs to be recharged if it runs out of power. The stored glucose readings on the reader are not lost.

How long does it take to completely charge the reader?

The reader should fully charge in approximately 3 hours if the battery is completely discharged.

Does the reader automatically turn off?

For most screens, the reader dims after 45 seconds and turns off after 60 seconds. When doing a finger prick test, removing the test strip will turn off the display.

Can the reader communicate with more than one sensor at any given time?

No, if the sensor is already activated by another reader use of that sensor is not allowed. The reader can only communicate with one sensor at a time. “Sensor already in use” will be displayed.

What will happen if users do not scan the reader over the sensor in an 
8-hour period?

Users will start losing the oldest glucose readings if the reader is not scanned at least once during an 8-hour period. For example, users scan the reader over the sensor at 13:00 and scans again at 22:00 then users will lose glucose data from 13:00-14:00. The reader will indicate this missing data on reports. There will be a gap on the daily trace that impacts the statistics on sensor usage however it will not be indicated in other reports.

Can users add/edit notes to any scan within 15 minutes or just last scan only?

Users can only add/edit notes associated with the last scan or last blood glucose strip test within 15 minutes.

What does LO mean when it appears after users scan the reader over the sensor?

If LO appears on the reader when users scan the reader over the sensor, it means the reading is lower than 40 mg/dL. Users can touch the message button for more information. Users should check their blood glucose on their fingertip with a test strip. If users get a second LO they should contact their healthcare professional immediately.

What is a trend arrow? How does it work? What does it tell users?

The FreeStyle Libre system offers a trend arrow with each glucose reading which tells users which way and how quickly glucose levels are changing. So, at any given time, users not only know what their glucose level is currently, but also which way it is heading. Depending on the direction of the trend arrow, users can find out if their glucose levels are changing gradually, moderately, or rapidly, facilitating decision-making.

Glucose trend arrow

The direction in which glucose is heading

Arrow pointing upGlucose is rising quickly (more than 2 mg/dL (0.1 mmol/L) per minute)
Arrow pointing slightly upGlucose is rising (between 1 and 2 mg/dL (0.06 and 0.1 mmol/L) per minute)
Arrow pointing to the rightGlucose is changing slowly (less than 1 mg/dL (0.06 mmol/L) per minute)
Arrow pointing slightly downGlucose is falling (between 1 and 2 mg/dL (0.06 and 0.1 mmol/L) per minute)
Arrow pointing downGlucose is falling quickly (more than 2 mg/dL (0.1 mmol/L) per minute)

What does HI mean when it appears after scanning the reader over the sensor?

If HI appears on the reader when users scan over the sensor it means the reading is higher than 500 mg/dL. Users can touch the message button for more information. Users should check their blood glucose on their fingertip with a test strip. If users get a second HI they should contact their healthcare professional immediately.

What is the usable life of the Reader?

The typical use of the FreeStyle Libre Reader is 3 years.

Abbreviation: A1c: glycated haemoglobin.

References: 

1. Finger pricks are required if your glucose readings do not match symptoms or expectations
25. The LibreView works with Windows 8.1 or Windows 10 Anniversary update and higher. The LibreLink works with an iPhone 8 or higher running iOS 15.5 or higher to utilize the NFC capability needed to scan the FreeStyle Libre sensor
26. A finger prick test using a blood glucose meter is required during times of rapidly changing glucose levels when interstitial fluid glucose levels may not accurately reflect blood glucose levels or if hypoglycaemia or impending hypoglycaemia is reported by the system or when symptoms do not match the system readings

* The FreeStyle 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 FreeStyle LibreLink may require registration with LibreView

# The LibreLinkUp app is only compatible with certain mobile devices and operating systems. Please check www.librelinkup.com for more information about device compatibility before using the app. Use of LibreLinkUp and FreeStyle LibreLink may require registration with LibreView. The LibreLinkUp mobile app is not intended to be a primary glucose monitor: home users must consult their primary device(s) and consult a healthcare professional before making any medical interpretation and therapy adjustments from the information provided by the app

^ The LibreView website is only compatible with certain operating systems and browsers. Please check www.libreview.com for additional information