Faqs

FAQs

Have questions that need answers? Choose from one of the FAQ categories below.

Questions related to Products

The FreeStyle Libre system is only indicated for use in humans.

The performance of the FreeStyle Libre System when used with other implanted medical devices, such as pacemakers, has not been evaluated.

You can scan as often as you want, but the reading will never change more frequently than every 60 seconds.

To keep the sensor profile small it has a limited storage capacity. To make sure it could hold 8 hours of data (for a typical overnight period), a 15-minute interval was chosen.

The sensor is applied on the back of the upper arm with a disposable device called an applicator. When the sensor is applied, a small (5mm) sterile filament is inserted just under the skin, and held in place with a small adhesive pad. In a study conducted by Abbott Diabetes Care, most users agreed that inserting the sensor was no more painful than a typical finger prick glucose test*.

*Data on file. Abbott Diabetes Care.

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, remove the sensor by peeling off the adhesive pad.

The sensor should only be worn on the back of the upper arm.

The portion of the sensor that gets inserted under the skin is less than 0,4 millimetre wide (1mm is about the thickness of a few strands of human hair) and it’s inserted only about 5mm under the skin, so most people will never feel the sensor while it is being worn. In a study conducted by Abbott Diabetes Care, most users agreed that they did not feel any discomfort under the skin whilst wearing the FreeStyle Libre sensor*. *Data on file Abbott Diabetes Care

You can take as many glucose readings as you want while the sensor is being worn. In order to get a 24-hour glycemic picture you need to scan at least once every 8 hours.

Yes, the accuracy of the sensor remains consistent for up to 14 days. 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.

Yes. The sensor can be worn while bathing, showering, swimming or exercising. The sensor should not be taken below a depth of 1 metre (3 feet) in water, and should not be submerged in water for more than 30 minutes.

Check with airline prior to departure as rules and regulations may change without notice.

After 14 days of wear, the reader notifies you. The time to the end of the sensor wear period is shown on the screen of the reader when you switch it on. After the wear period, the sensor will stop working and should be replaced with a new sensor.

Start a new sensor. The reader will identify that it is a new sensor and ask if you want to start it.

To check the system is working simply switch on the reader and scan over the sensor to get a glucose reading. If for any reason, the sensor does not work, an error message will appear on the reader prompting the user to replace the sensor.

If you have symptoms that do not match the FreeStyle Libre system reading or suspect your reading may be inaccurate, check the reading by conducting a finger prick test using a blood glucose meter. For convenience, there is a built-in blood glucose meter within the reader that can be used for blood glucose readings. If you are experiencing symptoms that are not consistent with your blood glucose readings, consult your health care professional.

For full details please refer to the FreeStyle Libre system User Manual.

If the sensor stops working due to extreme temperature, the user will get an error message indicating ‘Glucose Reading unavailable’.

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. There is a battery icon on the reader which will indicate battery life.

Yes, you can get glucose readings through clothing by scanning the reader over the sensor. The reader can capture data from the sensor when it is within 1cm to 4cm of the sensor.

The oldest glucose readings will be lost if the reader is not scanned at least once during an 8 hour period. For example, if you scan the reader over the sensor at 1:00pm and again at 10:00pm, then you will lose glucose data from 1:00-2:00pm.

The reader is smart enough to figure out what data is new with each scan and not double-count any data.

In the Middle East the available languages are English and Arabic.

The reader display timeout is 60 seconds (120 seconds from when a test strip is inserted).

The software can be used to help you more easily identify trends and patterns in your glucose data. For example, you may find that at certain times of the day your glucose is consistently trending high or low and you can focus on these areas for improvements. You can also use the software to setup or activate certain features of your reader (for more details see “Can I use the software to setup or change settings on my reader”).

The software is free of charge and does not expire so you can use it for as long as you like.

Yes, the software is compatible with the following Microsoft Windows Operating Systems:
• Microsoft Windows 7 (32 or 64 bit)
• Microsoft Windows 8 (32 or 64 bit)
• Microsoft Windows 10 (32 or 64 bit)

Yes, the software is compatible with the following Mac OS:
• OS X El Capitan

A10 If you can install other software on your computer then you will be able to install the FreeStyle Libre software. If you do not have permissions to install software on your computer, for example at work, then you will need to work with your administrator to install the program.

Yes, you can use the software to setup or change the following features on your Reader: Time and Date: Change the Reader time and date to match the Computer time and date. You can also change the Clock Style to either 12-hour or 24-hour. CAUTION: It is very important to set the time and date correctly. These values affect the Reader data and settings. Sounds and Vibrations: Change the volume of the Reader’s notification tones and turn on or off notification tones, notification vibrations, and touch tones. Language: Change the language on the Reader. (This option is only available on Readers with multiple languages.) Target Glucose Range: Set the target glucose range for the Reader. Work with your health care professional to determine your Target Glucose Range. The Target Glucose Range can be set within 70 to 180 mg/dL. Note: On the Reader, the Target Glucose Range is displayed on glucose graphs and used to calculate your Time in Target. Reader Profile: Change the name/and or ID that will be printed on the reports. The name and ID will be saved to the Reader but will not be visible on the Reader itself. Notes: Add notes to glucose readings and strip results on the Reader such as «Exercise,» or «Food» or create your own custom notes. Reminders: Change or setup reminders on the Reader, such as «Check Glucose», «Take Insulin» or create your own custom reminders.

You are encouraged to always share your data with your healthcare professional so that they can better work with you to manage your daily routine. The FreeStyle Libre software is free to download and use by you and your healthcare professional.

If a software update is available, a message will be shown on the FreeStyle Libre software Home Screen. Follow the on-screen instructions to perform the update.

Note: An active internet connection is required to receive update notices.

Consult the software user’s manual or your healthcare professional if you are having difficulty understanding or using the reports.

eA1c is an estimated value for HbA1c based on the average sensor glucose over the timeframe selected. eA1c is calculated using a formula from the published reference below*. eA1c is not meant to replace or predict the HbA1c tested in a laboratory. Instead you can use this value to monitor changes to eA1c over time.

* Nathan DM, Kuenen J, Borg R, et al. Translating the HbA1c assay into estimated average glucose values. Diabetes Care . 2008;31:1473-1478.

The Ambulatory Glucose Profile (AGP) graph, found on several reports, provides a visual reference for changing glucose levels over time. Sensor glucose data of 5 days or more are combined and plotted into a single 24-hr chart. By plotting data this way, you can see patterns of variability that may be common to a specific time of day.

Median – is where half the readings fall below the line and half the readings fall above. 25th to 75th Percentile – is where 25%- 75% of the observed sensor glucose readings fall (or the middle 50% of results).

10th to 90th Percentile – is where 10% – 90% of the observed sensor glucose readings fall

There are 5 standard notes and 6 custom notes that you can create for a total of 11 notes.

You can create up to 12 reminders.
To be able to create 12 reminders you will require the FreeStyle Libre software.

Questions related to Sensor

If the sensor stops working due to extreme temperature, the user will get an error message indicating ‘Glucose Reading unavailable’.

To check the system is working simply switch on the reader and scan over the sensor to get a glucose reading. If for any reason, the sensor does not work, an error message will appear on the reader prompting the user to replace the sensor. If you have symptoms that do not match the FreeStyle Libre system reading or suspect your reading may be inaccurate, check the reading by conducting a finger prick test using a blood glucose meter. For convenience, there is a built-in blood glucose meter within the reader that can be used for blood glucose readings. If you are experiencing symptoms that are not consistent with your blood glucose readings, consult your health care professional. For full details please refer to the FreeStyle Libre system User Manual.

Start a new sensor. The reader will identify that it is a new sensor and ask if you want to start it.

After 14 days of wear, the reader notifies you. The time to the end of the sensor wear period is shown on the screen of the reader when you switch it on. After the wear period, the sensor will stop working and should be replaced with a new sensor.

Check with airline prior to departure as rules and regulations may change without notice.

Yes. The sensor can be worn while bathing, showering, swimming or exercising. The sensor should not be taken below a depth of 1 metre (3 feet) in water, and should not be submerged in water for more than 30 minutes.

Yes, the accuracy of the sensor remains consistent for up to 14 days. 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.

You can take as many glucose readings as you want while the sensor is being worn. In order to get a 24-hour glycemic picture you need to scan at least once every 8 hours.

The portion of the sensor that gets inserted under the skin is less than 0,4 millimetre wide (1mm is about the thickness of a few strands of human hair) and it’s inserted only about 5mm under the skin, so most people will never feel the sensor while it is being worn. In a study conducted by Abbott Diabetes Care, most users agreed that they did not feel any discomfort under the skin whilst wearing the FreeStyle Libre sensor*.
*Data on file Abbott Diabetes Care

The sensor can only be worn on the back of the upper arm.

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, remove the sensor by peeling off the adhesive pad.

The sensor is applied on the back of the upper arm with a disposable device called an applicator. When the sensor is applied, a small (5mm) sterile filament is inserted just under the skin, and held in place with a small adhesive pad. In a study conducted by Abbott Diabetes Care, most users agreed that inserting the sensor was no more painful than a typical finger prick glucose test*.

*Data on file. Abbott Diabetes Care.

To keep the sensor profile small it has a limited storage capacity. To make sure it could hold 8 hours of data (for a typical overnight period).

You can scan as often as you want, but the reading will never change more frequently than every 60 seconds.

The sensor automatically measures glucose levels every minute and stores readings at 15-minute intervals for 8 hours. When the sensor is scanned by the reader, the sensor automatically transmits 8 hours of data to the reader.

The sensor is 5mm in height and 35mm in diameter. The portion of the sensor that gets inserted under the skin is less than 0,4 mm wide and it’s inserted only about 5mm under the skin. In a study conducted by Abbott Diabetes Care, users agreed that inserting the sensor was no more painful than a typical finger prick glucose test*.
*Data on file. Abbott Diabetes Care.

Questions related to Reader

The reader display timeout is 60 seconds (120 seconds from when a test strip is inserted).

In the UK, the only language available is English. The language on the reader is country-specific and therefore varies from country to country.

The reader is smart enough to figure out what data is new with each scan and not double-count any data.

The oldest glucose readings will be lost if the reader is not scanned at least once during an 8 hour period. For example, if you scan the reader over the sensor at 1:00pm and again at 10:00pm, then you will lose glucose data from 1:00-2:00pm.

Yes, you can get glucose readings through clothing by scanning the reader over the sensor. The reader can capture data from the sensor when it is within 1cm to 4cm of the sensor.

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. There is a battery icon on the reader which will indicate battery life.

The reader needs to be recharged if it runs out of power. The stored glucose readings on the reader are not lost. The reader should fully charge in approximately 3 hours if the battery is completely discharged.

Questions related to Software

eA1c is an estimated value for HbA1c based on the average sensor glucose over the timeframe selected. eA1c is calculated using a formula from the published reference below*. eA1c is not meant to replace or predict the HbA1c tested in a laboratory. Instead you can use this value to monitor changes to eA1c over time.
* Nathan DM, Kuenen J, Borg R, et al. Translating the HbA1c assay into estimated average glucose values. Diabetes Care . 2008;31:1473-1478.

Median – is where half the readings fall below the line and half the readings fall above. 25th to 75th Percentile – is where 25%- 75% of the observed sensor glucose readings fall (or the middle 50% of results).
10th to 90th Percentile – is where 10% – 90% of the observed sensor glucose readings fall.

You can create up to 12 reminders.
To be able to create 12 reminders you will require the FreeStyle Libre software.

There are 5 standard notes and 6 custom notes that you can create for a total of 11 notes.

Consult the software user’s manual or your healthcare professional if you are having difficulty understanding or using the reports.

You are encouraged to always share your data with your healthcare professional so that they can better work with you to manage your daily routine. The FreeStyle Libre software is free to download and use by you and your healthcare professional.

If a software update is available, a message will be shown on the FreeStyle Libre software Home Screen. Follow the on-screen instructions to perform the update.
Note: An active internet connection is required to receive update notices.

Yes, you can use the software to setup or change the following features on your Reader: Time and Date: Change the Reader time and date to match the Computer time and date. You can also change the Clock Style to either 12-hour or 24-hour. 

CAUTION: It is very important to set the time and date correctly. These values affect the Reader data and settings. Sounds and Vibrations: Change the volume of the Reader’s notification tones and turn on or off notification tones, notification vibrations, and touch tones. Language: Change the language on the Reader. (This option is only available on Readers with multiple languages.) Target Glucose Range: Set the target glucose range for the Reader. Work with your health care professional to determine your Target Glucose Range. The Target Glucose Range can be set within 70 to 180 mg/dL.

Note: On the Reader, the Target Glucose Range is displayed on glucose graphs and used to calculate your Time in Target. Reader Profile: Change the name/and or ID that will be printed on the reports. The name and ID will be saved to the Reader but will not be visible on the Reader itself. Notes: Add notes to glucose readings and strip results on the Reader such as «Exercise,» or «Food» or create your own custom notes. Reminders: Change or setup reminders on the Reader, such as «Check Glucose», «Take Insulin» or create your own custom reminders.

If you can install other software on your computer then you will be able to install the FreeStyle Libre software. If you do not have permissions to install software on your computer, for example at work, then you will need to work with your administrator to install the program.

Yes, the software is compatible with the following Mac OS:
• OS X El Capital

Yes, the software is compatible with the following Microsoft Windows Operating Systems:
• Microsoft Windows 7 (32/64)
• Microsoft Windows 8 (32/64)
• Microsoft Windows 10 (32/64)

The software is free of charge and does not expire so you can use it for as long as you like.

The software can be used to help you more easily identify trends and patterns in your glucose data. For example, you may find that at certain times of the day your glucose is consistently trending high or low and you can focus on these areas for improvements.

You can also use the software to setup or activate certain features of your reader (for more details see “Can I use the software to setup or change settings on my reader”).

No, the FreeStyle Libre software is not required to use your FreeStyle Libre system, but it can help you more easily spot trends and patterns in your data.

The Ambulatory Glucose Profile (AGP) graph, found on several reports, provides a visual reference for changing glucose levels over time. Sensor glucose data of 5 days or more are combined and plotted into a single 24-hr chart. By plotting data this way, you can see patterns of variability that may be common to a specific time of day.

More Questions

You are required as a driver to monitor their blood glucose levels. Interstitial fluid glucose readings, such as those provided by the FreeStyle Libre sensors, are not considered to be sufficient on their own and drivers must also monitor their blood glucose levels using a traditional blood glucose test. The FreeStyle Libre reader incorporates a built-in blood glucose meter which can be used with FreeStyle Optium Blood Glucose Test Strips. Please consult the FreeStyle Libre system User’s Manual for complete details on using the built-in meter.

Yes, the system can calculate a suggested mealtime insulin dose when using the built-in blood glucose meter since it has a built-in insulin dose calculator function.
Please note that this feature only works when using the blood glucose test strip port and needs to be activated by a healthcare professional.

The FreeStyle Libre Glucose Monitoring System is indicated for measuring interstitial fluid glucose levels in people (age 4 and older) with diabetes mellitus. The indication for children (age 4 – 17) is limited to those who are supervised by a caregiver who is at least 18 years of age. A caregiver at least 18 years old is responsible for supervising, managing, and assisting the child in using the FreeStyle Libre system and interpreting its readings.

The insulin calculator utilises settings entered into the insulin calculator during one of two setup modes (Easy or Advanced); this feature requires an understanding of the use of insulin and must be set up by a healthcare professional. Using the settings they enter, the glucose reading from the built-in blood glucose meter and carbohydrate information (in grams or servings) the user provides, the insulin calculator software in the reader calculates a suggested insulin dose.

No, the insulin calculator can assist you with calculating rapid-acting (meal-time or short-acting) insulin doses only. The insulin calculator must be set up by a healthcare professional.

You can use the built-in meter to check your blood ketone levels using FreeStyle Optium β ketone test strips (available on prescription). You should perform a blood ketone test on your fingertip only. Be sure to read the test strip instructions for use prior to using the built-in meter.

Easy setup’ is for users who use a fixed dose of rapid-acting insulin before meals. ‘Advanced setup’ is for users who count carbohydrates (in grams or servings) and/or use a correction factor to adjust doses of rapid-acting insulin at meals. The insulin calculator must be set up by a healthcare professional.

Flash glucose monitoring is a user-friendly way to discreetly obtain glucose readings. A flash glucose monitoring system provides a complete picture showing the current glucose reading plus you can see how glucose levels are changing in a flash by just scanning the reader over the sensor.

What makes flash glucose monitoring system unique is that a quick scan of the reader over the sensor provides a complete picture of your glucose including the current glucose reading, 8 hour history and trend arrow showing if your glucose level is going up, down or staying steady.

‘Flash’ reflects the fact that users can obtain glucose readings quickly by just scanning the reader over the sensor*. Flash glucose monitoring also provides a flash of insight to people with diabetes and their health care professionals.
*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.

To obtain a glucose reading, simply perform a quick 1-second scan of the reader over the sensor.
This easy scan gives you more information than a blood glucose test without the need for routine finger pricks*. The FreeStyle Libre system also offers software to generate concise reports that provide a clear analysis of your glucose data.

* 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.

No, the FreeStyle Libre sensor is calibrated during the manufacturing process so you don’t have to. The sensor is activated by scanning and then, after a 1 hour warm up period, it starts to record glucose readings automatically.

Traditional blood glucose monitoring provides users with glucose readings that represent distinct points in time. Users do not get information regarding how their glucose levels have been changing, nor do they get information about where their glucose levels are heading. Without such information, it can be easy to miss significant glucose fluctuations – the ups and downs. The FreeStyle Libre system is a new way to obtain glucose readings. It allows the user to get their current glucose reading by just scanning the reader over the sensor, and also provides a complete picture of glucose variations.

This product should be disposed of in accordance with all applicable local regulations related to the disposal of electronic equipment, batteries, sharps, and materials potentially exposed to body fluids.
This means the used applicator and sensor pack should be disposed of in a Biohazard Sharps bin – Clinical waste referral is required from the district nurse or GP, but the majority of people with diabetes will already have the necessary arrangements in place. The used sensor should be removed and wiped down with disinfectant, and then dispose of as electrical waste (the same as a battery).

The FreeStyle Libre flash glucose monitoring system offers a Trend Arrow with each glucose reading which tells you which way and how quickly glucose levels are changing. So, at any given time, you not only know what your glucose level is currently, but also which way it is heading. Depending on the direction of Trend Arrow, you can find out if your glucose levels are going up, down or staying steady, facilitating better decision-making.

Abbott Diabetes Care is committed to making its products safe for the user. After the insertion, the sensor and the body need to equilibrate (or settle). We have found through our research that it is not always easy to accurately measure glucose in the body until this equilibration happens. Therefore, we let the system equilibrate for 1 hour to make sure that it is providing accurate glucose readings.

The reader storage temp is -20 °C to 60 °C and the sensor should be stored at 4 °C – 25°C.

Top Questions

You are required as a driver to monitor their blood glucose levels. Interstitial fluid glucose readings, such as those provided by the FreeStyle Libre sensors, are not considered to be sufficient on their own and drivers must also monitor their blood glucose levels using a traditional blood glucose test. The FreeStyle Libre reader incorporates a built-in blood glucose meter which can be used with FreeStyle Optium Blood Glucose Test Strips. Please consult the FreeStyle Libre system User’s Manual for complete details on using the built-in meter.

This product should be disposed of in accordance with all applicable local regulations related to the disposal of electronic equipment, batteries, sharps, and materials potentially exposed to body fluids.

This means the used applicator and sensor pack should be disposed of in a Biohazard Sharps bin – Clinical waste referral is required from the district nurse or GP, but the majority of people with diabetes will already have the necessary arrangements in place. The used sensor should be removed and wiped down with disinfectant, and then dispose of as electrical waste (the same as a battery).

Median – is where half the readings fall below the line and half the readings fall above. 25th to 75th Percentile – is where 25%- 75% of the observed sensor glucose readings fall (or the middle 50% of results).

10th to 90th Percentile – is where 10% – 90% of the observed sensor glucose readings fall.

The software can be used to help you more easily identify trends and patterns in your glucose data. For example, you may find that at certain times of the day your glucose is consistently trending high or low and you can focus on these areas for improvements.

You can also use the software to setup or activate certain features of your reader (for more details see “Can I use the software to setup or change settings on my reader”).

The oldest glucose readings will be lost if the reader is not scanned at least once during an 8 hour period. For example, if you scan the reader over the sensor at 1:00pm and again at 10:00pm, then you will lose glucose data from 1:00-2:00pm.

The sensor automatically measures glucose levels every minute and stores readings at 15-minute intervals for 8 hours. When the sensor is scanned by the reader, the sensor automatically transmits 8 hours of data to the reader.

There are 5 standard notes and 6 custom notes that you can create for a total of 11 notes.

The reader storage temp is -20 °C to 60 °C and the sensor should be stored at 4 °C – 25°C.

The reader needs to be recharged if it runs out of power. The stored glucose readings on the reader are not lost. The reader should fully charge in approximately 3 hours if the battery is completely discharged.

The sensor is 5mm in height and 35mm in diameter. The portion of the sensor that gets inserted under the skin is less than 0,4 mm wide and it’s inserted only about 5mm under the skin. In a study conducted by Abbott Diabetes Care, users agreed that inserting the sensor was no more painful than a typical finger prick glucose test*.
*Data on file. Abbott Diabetes Care.

You can create up to 12 reminders.
To be able to create 12 reminders you will require the FreeStyle Libre software.