If unable to use rtCGM or a clear preference is expressed for isCGM, they should be offered intermittently scanned continuous glucose monitoring (commonly referred to as 'flash'). NICE Guidelines (Updated March 2022) Type 1 diabetesĪll adults with Type 1 diabetes should be offered real-time continuous glucose monitoring (rtCGM) or intermittently scanned continuous glucose monitoring (isCGM, commonly referred to as 'flash')Īll children with Type 1 diabetes should be offered real-time continuous glucose monitoring (rtCGM). The main points of the NHS England criteria for people that qualify for a Freestyle Libre are as follows: Most people will want to scan more often anyway- at least 8 times a day is recommended. For a complete picture of blood glucose levels, the sensor should be scanned at least once every 8 hours.The handset can capture data from the sensor when it is within 1 cm to 4 cm of the sensor.Libre should not be used above 10,000 feet. The sensor is water-resistant in up to 1 metre (3 feet) of water for a max of 30 minutes.There is a 5 to 10-minute delay in ISF glucose response to changes in blood glucose, but generally, glucose readings in ISF have been proven to reliably reflect blood glucose levels. That's because sensor glucose readings come from the interstitial fluid (ISF), a thin layer of fluid that surrounds the cells of the tissues below your skin, not from your blood. Unlike current blood glucose metres, the FreeStyle Libre sensor measures the glucose in the body's interstitial fluid (ISF).įinger prick blood glucose readings and sensor glucose readings won't always match and in fact, are likely to be different. The difference between blood glucose and sensor glucose As long as the sensor is scanned adequately, it automatically measures and continuously stores glucose readings day and night. You scan the sensor using a handset or mobile phone. Instead, a small sensor sits on your upper arm. What does the FreeStyle Libre tell you?įlash Glucose Monitoring (FGM) enables you to test your glucose levels without routinely pricking your finger.Web Resource Last Updated: 12-12-2022 Contents:
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