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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.
References:
* 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 sensor is 5mm in height and 35 mm in diameter.
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.
The site selected on the back of the upper arm should be clean-shaven.
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.
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).
The sensor automatically stops collecting glucose data and should be removed 14 days after being started.
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
If there is bleeding that does not stop, remove the sensor, and apply a new one at a different site.
To prevent discomfort or skin irritation, you should select a different location other than the one most recently used.
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.
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.
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.
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.
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.
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.
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.
References:
* 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
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.
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.
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.
References:
* 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
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.
References:
* 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
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.
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.
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)
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.
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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Please refer to sensor packaging for the expiry date. If customer has multiple sensors, they should use the shortest date first.
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.
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.
There are a number of steps and recommendations that can help with sensor adhesion. You can learn more by viewing our Adhesion Guide.
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.
The FreeStyle Libre sensor is approved for use on the back of the upper arm.
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.
FreeStyle Libre systems are designed to give you accurate glucose readings. By design, the sensor runs safety and diagnostics checks every minute to make sure the system is working optimally. If the sensor is unable to provide a glucose reading in that moment, a “sensor error” message will appear. This is a temporary condition which could happen during a period of intense exercise, for example. For the FreeStyle Libre system, simply wait the duration specified on the screen and scan again. In the rare event that the sensor is not functioning as intended, you will receive a “replace sensor” message on your mobile app or reader. In this situation, the sensor will be shut off and you will need to apply a new sensor.
By design, FreeStyle Libre sensors run safety and diagnostics checks every minute to make sure they are working optimally, and you have the accurate glucose readings you rely on for diabetes management. High rates of glucose change during periods of intense exercise, for example, could cause a temporary condition where the sensor is unable to provide a glucose reading in that moment resulting in a “sensor error” message. For the FreeStyle Libre system, simply wait the duration specified on the screen and scan again. In the rare event that the sensor detects it is not functioning as intended, for example after issues with sensor application or cases when the sensor is knocked from the skin, a “replace sensor” message will be displayed, and you will need to apply a new sensor.
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