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Diabetes Discussion
Type 1 Diabetes
Accuracy of Freestyle Libre
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<blockquote data-quote="Scott-C" data-source="post: 1707355" data-attributes="member: 374531"><p>The big selling point of libre was that it was "factory calibrated" so that, unlike dexcom, you wouldn't need to calibrate against blood twice a day. </p><p></p><p>But, erm, regular users know that it hasn't lived up to that claim. There are ways of working round it - I found that most of my sensors ran fairly consistently about 1 below actual, so it was easy enough to say when libre says 5 it's probably 6. </p><p></p><p>I'd normally test a fair bit on the first day or two of a new sensor just to get a sense of where it was in relation to blood and make adjustments from there.</p><p></p><p>Most folk find the difference fairly consistent but some get no consistency at all. It takes time and a few sensors to get an idea of how to read it and decide whether to trust it. I eventually, after a few months, decided I was ok bolusing from it.</p><p></p><p>One thing which has made a big difference is using a blucon transmitter with it. It's a small bluetooth transmitter from <a href="http://www.ambrosiasys.com" target="_blank">www.ambrosiasys.com</a>, costs about £100 one off cost plus £25 shipping and import dues, reads libre every 5 mins and bluetooths to a free android app xDrip+. The app lets me input a bg test to calibrate the sensor reading against blood. Makes a huge difference - provided I calibrate a couple of times a day when relatively stable, it's generally only about 0.2 to 0.5 out. Plus I get hypo alerts. Not bad for 100 quid.</p></blockquote><p></p>
[QUOTE="Scott-C, post: 1707355, member: 374531"] The big selling point of libre was that it was "factory calibrated" so that, unlike dexcom, you wouldn't need to calibrate against blood twice a day. But, erm, regular users know that it hasn't lived up to that claim. There are ways of working round it - I found that most of my sensors ran fairly consistently about 1 below actual, so it was easy enough to say when libre says 5 it's probably 6. I'd normally test a fair bit on the first day or two of a new sensor just to get a sense of where it was in relation to blood and make adjustments from there. Most folk find the difference fairly consistent but some get no consistency at all. It takes time and a few sensors to get an idea of how to read it and decide whether to trust it. I eventually, after a few months, decided I was ok bolusing from it. One thing which has made a big difference is using a blucon transmitter with it. It's a small bluetooth transmitter from [URL="http://www.ambrosiasys.com"]www.ambrosiasys.com[/URL], costs about £100 one off cost plus £25 shipping and import dues, reads libre every 5 mins and bluetooths to a free android app xDrip+. The app lets me input a bg test to calibrate the sensor reading against blood. Makes a huge difference - provided I calibrate a couple of times a day when relatively stable, it's generally only about 0.2 to 0.5 out. Plus I get hypo alerts. Not bad for 100 quid. [/QUOTE]
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