Here you’ll find answers to common questions about FreeStyle Libre, its apps and software.
Here you’ll find answers to common questions about FreeStyle Libre, its apps and software. Questions are organized by categories to help you easily find the information you’re looking for. Can’t find an answer to your question? Contact us
The world is currently experiencing an unprecedented situation with the outbreak of the coronavirus (COVID-19). While this impacts many people, we know that managing through this time can be particularly challenging for people with diabetes. Below includes some additional information to help guide your diabetes management.
For educational information about diabetes and COVID-19, please visit the https://www.diabetes.ca/campaigns/covid-19-(coronavirus)-and-diabetes site.
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As borders are closed – how can I get my products?
How can I connect with my doctor remotely?
Can I get my sensors delivered from the pharmacy?
Are you going to change the way the sensors are delivered if we are in lockdown?
If I am quarantined, can I still pick up my sensor or can someone else pick it up? Also, I am quarantined, how can I hand in my prescription.
Due to stockpiling, I am concerned that I might not get my products. Is Abbott doing anything about this?
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Does FreeStyle Libre require calibration using a blood sample?
No, FreeStyle Libre does not require finger-prick calibration. However, a finger-prick test using a blood glucose meter is required in the following situations:
Does it record data 24 hours a day?
Yes, the FreeStyle Libre automatically captures readings day and night, so that glucose variations can be seen throughout the day — including nighttime lows — as long as the sensor is replaced at least every 14 days and scanned at least once every 8 hours.
What is displayed when a user scans the sensor?
With each scan over the sensor, the reader displays: the current glucose reading, the latest 8 hours of glucose history and where glucose levels are heading.
Is interstitial fluid (ISF) a reasonable alternative for blood? What about the lag?
ISF is the fluid around the cells of your tissue below your skin. Glucose can freely move from your blood vessels to this fluid1, making it a reasonable alternative to blood for measuring glucose. Changes in blood glucose take about 5-10 minutes (“lag time”) to be reflected in ISF glucose.2 However, this is unlikely to impact routine day-to-day treatment decisions. The average lag time of the FreeStyle Libre system is approximately 5 minutes.3 This is why ISF glucose and blood glucose measurements taken at the same time won’t always match – and in fact – are likely to be different.
1. Rebrin K, Steil GM. Can interstitial glucose assessment replace blood glucose measurements? Diabetes Technol Ther 2000;2(3):461-72.
2. Rebrin K, Sheppard NF Jr, Steil GM. Use of subcutaneous interstitial fluid glucose to estimate blood glucose: revisiting delay and sensor offset. J Diabetes Sci Technol 2010;4(5):1087-98.
3. Data on file, Abbott, Clinical Report: Evaluation of the Accuracy of the Abbott Sensor-Based Interstitial Glucose Monitoring System 2014.
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Does the sensor need to be applied by a doctor or nurse?
No, it can easily be applied without the need for a doctor or nurse — an applicator makes it simple to replace the sensor.
How deeply is the sensor inserted?
The portion of the sensor that is inserted under the skin is less than 0.4 mm wide and is inserted only about 5 mm under the skin.
How big is the sensor?
The sensor is 5 mm in height and 35 mm in diameter — about the size of a toonie.
How long does it take to scan the sensor?
One second.
How frequently does the sensor measure glucose levels?
The sensor automatically measures glucose levels every minute and stores readings every 15 minutes.
How much data is read at each scan?
When the sensor is scanned, the sensor automatically transmits 8 hours of data.
How long does a sensor last?
A sensor lasts up to 14 days before needing to be replaced.
When the sensor is scanned, is it providing data from the past minute (current data) or data from the latest 15-minute storage interval?
Each time the sensor is scanned, it automatically transmits data from the last minute, even if that data has not yet been stored.
Can people swim, shower and exercise while wearing the sensor?
Yes, the FreeStyle Libre sensor is designed to be water-resistant in up to 1 metre (3 feet) of water. We recommend it not be immersed longer than 30 minutes.
Can users feel the sensor when they are wearing it?
While wearing the sensor, users generally won’t feel anything under the skin. In a clinical user experience study, over 90 % of participants did not feel discomfort under the skin while wearing the sensor.
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How far away can the reader be held and still scan the sensor?
The reader can be up to 4 cm away from the sensor and still capture data.
How much data does a reader store?
The reader stores up to 90 days of glucose information.
Can it get a glucose reading through clothing?
Yes, the reader can get a glucose reading through clothing with a thickness of up to 4 cm.
What strips are compatible with the FreeStyle Libre reader?
The FreeStyle Libre reader is designed to be used only with the FreeStyle Precision blood glucose and blood ketone test strips and MediSense control solution.
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Who is eligible to receive public coverage in Ontario for the FreeStyle Libre system?
As of September 16, 2019, the FreeStyle Libre system is reimbursed by the Ontario Drug Benefit (ODB) program for qualifying Ontario residents who manage their diabetes with insulin.
What is covered by the Ontario Drug Benefit plan?
The coverage will include both the FreeStyle Libre system sensors and reader.
How do I know if I qualify for public reimbursement of the FreeStyle Libre system under the Ontario Drug Benefit (ODB) program?
If you qualify for ODB and you manage your diabetes with insulin, you are eligible for public reimbursement of the FreeStyle Libre system. Please speak with your healthcare professional (including your pharmacist) to determine if the FreeStyle Libre system is right for you.
How do I know if I qualify for the Ontario Drug Benefit (ODB) program?
More information about who is covered by the ODB program is available on the Ontario Drug Benefit website.
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How do I know if I qualify for reimbursement for the FreeStyle Libre system sensors in Quebec under Régie de l’assurance maladie du Québec (RAMQ)?
If you’re over the age of 18 and currently using insulin, you may qualify for coverage. Please speak to your prescribing physician to determine if you qualify.
When does coverage under RAMQ begin?
The FreeStyle Libre system sensors is covered by RAMQ as of July 10, 2019. Your prescribing physician needs to submit the application for coverage with RAMQ. Applications for public coverage will require up to 25 business days for processing. Your pharmacist can also provide additional information about coverage under RAMQ.
How long will I receive coverage for in Quebec?
If you qualify for coverage under RAMQ, you will receive reimbursement for a three-month period to determine if the FreeStyle Libre system is right for you. Requests for further coverage can be made through your prescribing physician. To help ensure you receive uninterrupted coverage, follow-up with your healthcare provider before the initial three-month coverage period ends.
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What is the FreeStyle LibreLink mobile app?
The FreeStyle LibreLink app is a mobile application designed to work with FreeStyle Libre sensors. The app enables you to monitor your glucose using your iPhone or Android phone* with a FreeStyle Libre sensor – there is no need to use a separate blood glucose meter for routine glucose monitoring.* When you scan the sensor with a compatible phone that’s running the FreeStyle LibreLink app, your glucose data is displayed directly on your phone.
With the app you can:
To use the FreeStyle LibreLink app, you must register with LibreView, a cloud-based diabetes management system provided by Abbott and Newyu, Inc. Please see the product labelling for the FreeStyle Libre system and the FreeStyle LibreLink app for specific instructions on using the different products, including the supported age range.
Important: You must have a compatible iPhone or Android phone to install and use the app. See Compatibility Guide
Which mobile phones work with the FreeStyle LibreLink app?
The app is designed to work with iPhones and Android phones that meet the following minimum requirements. You can also check the Compatibility Guide for additional information.
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 your phone is not compatible.
Is the FreeStyle LibreLink app authorized for use in Canada?
Yes, the FreeStyle LibreLink app is authorized by Health Canada, license number 99351, and downloadable at no charge.
Are there other apps available that are intended for use with FreeStyle Libre sensors?
No, the FreeStyle LibreLink app is the only app that has been tested by Abbott to be compatible with FreeStyle Libre sensors. The FreeStyle LibreLink app* was developed to ensure compliance with local regulations, including safety and performance requirements in accordance with the intended use. Any product that is intended to be compatible with FreeStyle Libre sensors would also need to comply with these regulations as well.
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 7 or higher running iOS 11 or higher to utilize the NFC capability needed to scan the FreeStyle Libre sensor.
Please check our compatibility guide for more information about device compatibility before using the app.
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Is the app intended for use on pediatric, pregnant woman or persons on dialysis?
The app has the same indications for use as the FreeStyle Libre system. The FreeStyle Libre flash glucose monitoring system and FreeStyle LibreLink app (“App”), when used with the FreeStyle Libre sensor, are indicated for measuring interstitial fluid glucose levels in adults aged 18 years and older with diabetes mellitus. If you are using the FreeStyle LibreLink app, you must also have access to a blood glucose monitoring system as the app does not provide one. Always read and follow the label/insert.
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 Near-Field Communication (NFC) antenna in Android phones vary 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 sensor. The first tone indicates the phone’s Near-Field Communication (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 grey 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.
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 Near-Field Communication (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 glucose meter for routine testing.* 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 hypoglycemia or impending hypoglycemia is reported by the sensor, or when symptoms do not match the sensor readings.
Can I use the FreeStyle LibreLink app to scan someone else’s sensor?
No. 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 loved ones if they are using a separate app called LibreLinkUp.‡ The LibreLinkUp app allows loved ones to remotely monitor glucose readings.
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. Do not scan your sensor if restricted by flight regulations.
What if I don’t have phone service or WiFi?
WiFi 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 WiFi or 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 WiFi 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?
No. 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 email address that was used to create the account and follow the onscreen instructions. You will receive an email with a link to reset your password. Follow the link to create a new password, then sign into your account using your new password.
Which languages are supported in the FreeStyle LibreLink app?
The FreeStyle LibreLink app is currently available in the following languages:
Note: The FreeStyle LibreLink app is displayed in the same language as your phone’s operating system language. If you wish to use the FreeStyle LibreLink app in a different language, choose from one of the supported languages in your phone’s system settings. The FreeStyle LibreLink app will update the next time it is opened. If the FreeStyle LibreLink app doesn’t support the language set on your phone, the app will display text in English (US).
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.
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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 glucose monitoring.* The app can be used instead of or in combination with the FreeStyle Libre reader.
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.* 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 within one hour.
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 8 hours so you and your healthcare professional can get a complete picture of your glucose trends and patterns.
What are some of the differences between the FreeStyle LibreLink app and the FreeStyle Libre reader?*
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How do I access my glucose reports?
What reports are available in the app?
How many readings are required to estimate A1C?
How can I share my glucose data with my healthcare professional?
What should I do if I receive a 403 server error message while trying to download the FreeStyle Libre software?
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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 automatically§ 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 the 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 see our Privacy Policy 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 Policy within the app or here 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 iPhone 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.
Does the FreeStyle LibreLink app work with FreeStyle Libre desktop software?
No. Your glucose data from the FreeStyle LibreLink app will not be synced with FreeStyle Libre desktop software. The FreeStyle LibreLink app data is only stored by and visible through
Is the FreeStyle LibreLink app compatible with other diabetes management software?
Yes, with your permission, the app is able to share glucose data with certain other apps. View the Share menu within the FreeStyle LibreLink app to see what other apps are available for sharing in your region.
What should I do if I have questions about the app or my data?
If you have any questions about the app or your data, including questions on how to close your LibreView account, contact us.
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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 loved ones in near real-time. Both you and your loved one 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.
How many people can glucose data be shared with using the LibreLinkUp app?
Every FreeStyle LibreLink scan is automatically sent to your smartphone up to 20 people can view results from a single FreeStyle LibreLink account.
How do I pair LibreLinkUp with the FreeStyle LibreLink app?
You can get started with LibreLinkUp in 3 easy steps. Click here to learn how.
The FreeStyle Libre flash glucose monitoring system is indicated for measuring interstitial fluid glucose levels in adults aged 18 years and older with diabetes mellitus. Always read and follow the label/insert.
* The FreeStyle LibreLink app and the FreeStyle Libre reader have similar but not identical features. 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 FreeStyle LibreLink app or when symptoms do not match the app readings. The FreeStyle Libre sensor communicates with the FreeStyle Libre reader that started it or the FreeStyle LibreLink app that started it. A sensor started by the FreeStyle Libre reader will also communicate with the FreeStyle LibreLink app. 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 requires registration with LibreView.
† The LibreView website is only compatible with certain operating systems and browsers. Please check www.libreview.com for additional information.
‡ The LibreLinkUp app is only compatible with certain mobile device and operating systems. Please check www.librelinkup.com for more information about device compatibility before using the app. Use of LibreLinkUp and FreeStyle LibreLink requires 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.
§ Use of FreeStyle LibreLink requires registration with LibreView. Users must be connected to the internet in order for their glucose data to automatically upload to LibreView.
FreeStyle, Libre, and related brand marks are marks of Abbott. Product images are for illustrative purposes only. Other trademarks are the property of their respective owners.
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