Flash glucose monitoring. FreeStyle Libre sensor worn on back of the upper arm.
 
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The Freestyle Libre sensor is a continuous glucose monitoring (CGM) system that allows people with diabetes to see their glucose levels without having to prick their fingers.
 
The sensor is inserted into the back of the upper arm and can be worn for up to 14 days. It uses a small filament to measure glucose levels interstitial fluid (IF), which is the fluid that surrounds the cells.
 
The sensor then sends the readings to a reader or smartphone app, where they can be viewed in real time.  There are a number of benefits to using the Freestyle Libre sensor for blood glucose monitoring. Some of the key benefits include:
 
Less finger pricks: The Freestyle Libre sensor eliminates the need for finger pricks, which can be painful and inconvenient. This can be especially beneficial for people with diabetes who need to check their glucose levels frequently.
 
More accurate readings: The Freestyle Libre sensor is more accurate than finger prick tests, which can help people with diabetes better manage their condition.
 
Real-time data: The Freestyle Libre sensor provides real-time glucose readings, which can help people with diabetes make better decisions about their food intake, exercise, and medication.
 
Continuous monitoring: The Freestyle Libre sensor can be used to monitor glucose levels continuously, which can help people with diabetes identify trends and patterns in their blood sugar levels.