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 15 minutes)
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)
MHRA is aware that some users of the FreeStyle Libre flash glucose monitoring system are applying barrier creams, patches and sprays before attaching the sensor to reduce skin reactions. These barrier methods have not been tested by the manufacturer and may therefore affect the performance of the device.
The severity of the skin reaction can vary from person to person and for certain users this is a skin hypersensitivity reaction rather than an irritation reaction. For this type of reaction, once the person has become sensitised to the adhesive, every time the sensor is reapplied a skin reaction will occur. With each reapplication, the symptoms might appear more quickly and may worsen.
The manufacturer has confirmed that they have revised the formulation of the adhesive, which will be available to UK customers from April 2019.
Please note this problem may not be unique to the Abbott FreeStyle Libre sensor adhesive.
The same actions should be taken if patients experience similar symptoms with a different brand of
continuous glucose monitoring system.
The DVLA (Driver and Vehicle Licensing Agency) requires all drivers to monitor their glucose levels.
In February 2019, the DVLA updated their regulations to include Group 1 drivers to use Flash Glucose Monitoring systems for the purposes of driving. Drivers must not actively use a glucose monitoring system whilst driving a vehicle, instead you must pull over in a safe location before checking your device. Drivers using the FreeStyle Libre flash glucose monitoring system must get a confirmatory finger prick glucose level in the following circumstances:
• If your glucose level is 4.0mmol/L or below.
• If you have symptoms of hypoglycaemia.
• If your glucose monitoring system gives a reading that is not consistent with your symptoms.
• If you are aware that you have become hypoglycaemic or have indication of impending hypoglycaemia.
• During times of rapidly changing glucose levels
Group 2 drivers must continue to use finger prick testing for the purposes of driving. Flash Glucose Monitoring systems are not legally permitted for the purposes of Group 2 driving.
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Please Note: These prices are shown as a guide only. All delivery times are approximate but have been obtained in good faith.
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