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.
How big is the Sensor?
The Sensor is 5mm in height and 35 mm in diameter.
What if the FreeStyle Libre Sensors is packed in luggage, what about the scanners that luggage goes through either checked or carry on?
The FreeStyle Libre reader and the FreeStyle Libre Sensor can be exposed to common electrostatic (ESD) and electromagnetic interference (EMI), including airport metal detectors. Your FreeStyle Libre reader and Sensor can safely go through these when packed in luggage/carry-on or in the security tray. However, the FreeStyle Libre reader and the FreeStyle Libre Sensor should not be exposed to some airport scanners (i.e. x-ray and millimeter radio-wave). If in doubt about the type of security scan your FreeStyle reader and Sensor are passing through, notify the Security Officer prior to proceeding through the airport security checkpoint and request another type of screening to be performed by the Security Officer.
Is there any chance of overlapping glucose readings if users scan the reader over the Sensor multiple times during an 8-hour period?
The reader identifies what data is new with each scan and does not double-count any data.
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 the Sensor is scanned by the reader, the Sensor automatically transmits data to the reader via radio frequency identification (RFID) communication, conforming to the ISO 15693 RFID standard.
What components are included in the FreeStyle Libre system?
The FreeStyle Libre system has two main parts: a compatible smartphone or reader and a disposable Sensor, which is worn on the back of the upper arm. The user wirelessly scans the Sensor with the compatible smartphone or reader to get glucose readings. The Sensor pack is used with the Sensor applicator to prepare the Sensor for use. The Sensor is applied to the back of the upper arm with the aid of the Sensor applicator. The small, disposable, 14-day Sensor is worn on the back of the upper arm and continuously measures glucose. *Based on the Sensor being replaced once every 14 days and scanned once every 8 hours.
What happens if the FreeStyle Libre Sensor is worn beyond 14 days?
The Sensor automatically stops collecting glucose data and should be removed 14 days after being started.
What benefit will FreeStyle Libre Flash Glucose Monitoring provide to patients?
One of the primary reasons patients do not check their blood glucose as often as they should is the pain and inconvenience associated with current blood glucose monitoring systems.1 Blood glucose monitoring is indiscreet and involves many hassles and inconveniences including fingersticks. Flash Glucose Monitoring is designed to provide a solution to easily, quickly and discreetly capture complete glucose information with a simple scan.
1Hortensius, Johanna., et al. Perspectives of patients with type 1 or insulin-treated type 2 diabetes on self-monitoring of blood glucose: a qualitative study. BMC Public Health 12.1 (2012): 167
Why does the system require a one-hour warm up period?
Abbott Diabetes Care 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.
Why does the Sensor log data every 15 minutes? Why not every 5 minutes?
The Sensor has limited storage capacity to keep the Sensor profile small. In the interest of preserving 8 hours for a typical overnight period, 15 minutes was chosen for the interval.
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