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Message: <blockquote data-quote="smidge" data-source="post: 692360" data-attributes="member: 29301">WRT the accuracy or otherwise of the Libre, I think there is a large element of it simply measuring something different as Tim and DunePlodder say, but when you get a bad sensor you will see that the readings are completely different and completely random. My third sensor has been spot on, the first two were random. My third sensor expires tomorrow and I'm really upset about it. I can rely on this sensor. If this had behaved like my first two, I would probably be seeing the next sensor as my last for some time and bringing my Libre experiment to a close, but having seen the difference a really accurate sensor is making to me, I'd be lost without it! I was wearing the Medtronic sensor for a week last week and they have now sent me the data through, but it's on paper rather than electronic and very hard to match against the exact Libre readings for the same time period because of the different parameters they used. For example, they have set the whole period by meal time rather than time and as my mealtimes are pretty moveable, that isn't helpful in terms of comparison. However, there is a note on the report to say that the calibration readings with the Accuchek Mobile are accurate/within tolerance. When I see them next week, I'll try to get an electronic dataset so that I can manipulate it to do a proper comparison. If anyone is feeling wealthy, it would be a really interesting experiment to have two Libre sensors (one on each arm!) and two readers (one for each sensor). If Tim's hypothesis is correct and the differences some of us are seeing are really just IFG v BG plus time lag, these should give identical results both on the scan and the continuous data shouldn't they? I'm not volunteering though LOL! Smidge</blockquote>

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