The FreeStyle Libre sensor is applied on to the back of the upper arm with a simple, disposable device called an applicator. When the sensor is applied, a thin, flexible and sterile fibre is inserted just under the skin. It is held in place with a small adhesive pad. In a study conducted by Abbott, users agreed that inserting the sensor was no more painful than a typical finger prick test.1
To obtain a glucose reading, simply perform a quick, painless 1-second scan of the reader over the sensor. This scan gives you more information than monitoring with blood glucose test strips, without the need for routine finger pricks.† The FreeStyle Libre system also offers LibreView∏,₼ to generate concise reports to assist with the analysis of glucose data.
Each scan of the reader over the sensor gives a current glucose reading, the last 8-hours of glucose history, and a trend arrow showing if glucose is going up, down, or changing slowly. The reader can scan through clothingΩ.
1. Data on file. Abbott Diabetes Care.Close How it Works
|SENSOR SIZE||5 mm height and 35 mm diameter|
|SENSOR WEIGHT||5 grams|
|SENSOR POWER SOURCE||1 silver oxide battery|
|SENSOR LIFE||Up to 14 days|
|SENSOR MEMORY||8 hours (glucose reading stored every 15minutes)|
|SENSOR OPERATING TEMPERATURE||10°C to 45°C|
|Sensor applicator and sensor pack storage temperature||4°C to 25°C|
|Operating and storage relative humidity||10%-90%, non-condensing|
|SENSOR WATER RESISTANCE||IP27: Can withstand immersion into one meter (3 ft) of water up to 30 minutes|
|OPERATING AND STORAGE ALTITUDE||-381 meters(-1,250 ft) to 3048 meters(10,000 ft)|
Sign Up to LibreView∏
LibreView offers a range of reports, including the 'Glucose Pattern Insights' report which includes assessment of Glucose Control Measures and the Ambulatory Glucose Profile that you can use to:
The FreeStyle Libre software is intended for use by individuals and health care professionals to aid in the review, analysis, and evaluation of information such as sensor glucose readings, blood glucose test results, blood ketone test results, and other data uploaded from the FreeStyle Libre flash glucose monitoring system, in support of an effective diabetes health management program
The FreeStyle Libre software is not intended for the diagnosis of or screening for diabetes mellitus. Users should be aware that the FreeStyle Libre software is merely an information management tool and it is therefore not intended to substitute for the support of a health care professional. Individuals should always consult their health care professional if they have any queries or concerns about diabetes management.
The minimum system configuration required to use LibreView as a data viewer is:
Windows 7 SP1, Windows 8.1 or Windows 10 Anniversary update (and higher) • Display resolution of 1024 x 768 pixels or greater. • Internet Explorer 11, Firefox release 32.0 or Chrome release 37.0 • 1 Ghz processor (dual/multi-core recommended) • 2 GB RAM • Internet connection with 0.5 Mbps download speed
Mac OS X Yosemite (10.10) or higher • Display resolution of 1024 x 768 pixels or greater • Safari release 10.1 or Chrome release 37.0 or higher • 1 Ghz processor (dual/multi-core recommended) • 2 GB RAM • Internet connection with 0.5 Mbps download speed
We recommend always using the most up-to-date version of your browser when using LibreView. Please note, at this time, Microsoft Edge is not a supported browser.
In order to upload data, you must install the LibreView Device Drivers (LDD) when prompted.
Uploading data requires the following additional system specifications:
Windows LDD 3.1.0 and higher • Windows 7 SP1, Windows 8.1 or Windows 10 April 2018 update (and higher) • Will install if not present .Net Framework 4.7.2 and Microsoft Visual C++ 2017 Redistributable (x86) • 8 GB+ RAM and 200 MB free disk space • Internet connection with 1 Mbps upload speed • Local Administrator account
Mac LDD 1.1.0 • Mac OS X Yosemite (10.10) or higher • 8 GB+ RAM and 200 MB free disk space • Internet connection with 1 Mbps upload speed • Local Administrator account
Deliveries placed on www.freestylelibre.co.uk can only be shipped to addresses in the United Kingdom. One specific order can only be sent to one specific address. You can store up to 5 different delivery addresses (all in the same country) in your account.
Delivery is £4.94 and takes approximately 5-7 days
If you are not happy with your order, you can return it to us within 14 days of delivery provided the following criteria is met:
Opened Outer Packaging – Sensors
If the outer packaging of the sensors has been opened then you may still cancel the Contract within 14 days of the date of receipt of the sensors.
If you wish to return sensors to Abbott as set out above, please contact the Abbott Customer Careline on 0800 170 1177 who will be able to advise you on how to return the sensors to Abbott.
If the individual sensors have not been opened and providing that you return the sensors to Abbott within 14 days Abbott will refund the full purchase price to you and the delivery costs.
You will be responsible for the costs of returning the sensors to Abbott.
In the event that you open an individual sensor package, Abbott is unable to accept the sensor for return for safety and hygiene reasons. You should dispose of the sensor according to the instructions included in the package.
Abbott is unable to offer any refund with respect to Sensors that have been opened.
In the event that you open your reader, Abbott is unable to accept the reader for return for safety and hygiene reasons. You should dispose of the reader according to the instructions included in the package.
Abbott is unable to offer any refund with respect to a reader that has been opened.Close Delivery & Returns
The FreeStyle Libre sensor's small size (similar to a £2 coin) makes it discreet to wear.
This small water resistant₸ sensor is worn on the back of your upper arm and lasts for up to 14 days.
Unlike traditional blood glucose monitoring, using the FreeStyle Libre sensor does not involve routine finger pricks.†
Additionally, the FreeStyle Libre sensor is made by a process which means the sensitivity of the sensors vary very little. This means that is calibrated at the factory - so you don’t need to calibrate it again using a finger prick.1,3
It continuously measures the glucose concentration in your interstitial fluid, and stores 8 hours of data.
Finger prick blood glucose readings and sensor glucose readings won’t always match and in fact are likely to be different.1
Sensor glucose readings come from the interstitial fluid (ISF), a thin layer of fluid that surrounds the cells of the tissues below your skin. There is a 5 to 10 minute delay in ISF glucose response to changes in blood glucose.2
1 Bailey et al. The Performance and Usability of a Factory-Calibrated Flash Glucose Monitoring System. Diabetes Technology & Therapeutics. Nov 2015; 17(11):787-794 * Scanning the sensor does not require lancets.
2 Basu A, et al., Time Lag of Glucose from Intravascular to Interstitial Compartment in Humans, Diabetes. 2013 Dec; 62(12): 4083–4087. Published online 2013 Nov 16. doi: 10.2337/db13-1132
3 Hoss, Udo., Budiman, Erwin. Factory-Calibrated Continuous Glucose Sensors: The Science Behind the Technology. Diabetes Technology & Therapeutics 19.S2 (2017): S-44
Φ For a complete glycaemic picture, scan once every 8 hours.
‡ 60-minute warm-up required when applying the sensor
~ Daily Patterns need at least 5 days of glucose data
Ω The Reader can capture data from the sensor when it is within 1cm to 4cm of the sensor.
Θ The Glucose Trend Arrow may not always appear with every reading.
₸ Sensor is water resistant in up to 1 metre (3 feet) of water for a maximum of 30 minutes. Do not immerse longer than 30 minutes. Not to be used above 10,000 feet.
† 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.
Ѱ For children aged 4-12, a caregiver at least 18 years old is responsible for supervising, managing, and assisting them in using the FreeStyle Libre system and interpreting its readings.
◊ 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 hypoglycaemia or impending hypoglycaemia 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 Smartphone Compatibility Guide before using the app. Use of FreeStyle LibreLink requires registration with LibreView.
§ LibreLinkUp is a mobile application, developed and provided by Newyu, Inc. Use of LibreLinkUp and FreeStyle LibreLink requires registration with LibreView, a service provided by Abbott and Newyu, Inc. 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.
¥ LibreLinkUp is compatible with Android and iOS smartphones. Your phone must meet the following requirements: Android OS 6.0 (or higher) or iOS 11 (or higher) and an internet connection.
ǁ Transfer of glucose data between applications depends on mobile connectivity.
∏ LibreView is developed and distributed by Newyu, Inc.
₼ The LibreView website is only compatible with certain operating systems and browsers. Please check www.libreview.com for additional information.
Δ Use of FreeStyle LibreLink requires registration with LibreView. Automatic upload requires a wireless internet connection or mobile data connection.
* Scanning the sensor does not require lancets.