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Freestyle Libre Sensor: highly inaccurate??
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<blockquote data-quote="TedTomato" data-source="post: 1732097" data-attributes="member: 469844"><p>In term of comparing readings from blood glucose testers and the Libre readings, I have 3 blood glucose testers, so comparisons haven't been done with just one device.</p><p></p><p>The usual justification is: "the Libre is measuring different fluids, not blood glucose etc, so therefore readings can't be compared".</p><p></p><p>This argument makes no sense to me. It's sold as a device to report blood glucose levels, shows readings in mmol/L etc.</p><p></p><p>It's as if I was putting a new scale on the market, and saying "it's measuring weight a different way, extrapolating value to kilograms, and sometimes it's right, sometimes it's wrong". People wouldn't say: don't worry about its accuracy, it's measuring weight in a different way...</p><p></p><p>The Libre is designed to extrapolate information gathered, and display it to patients in units they understand, and they can compare with other devices showing the same units, or results from their doctors.</p><p></p><p>If the device is measuring something else, and can't extrapolate accurately to something known, then it shouldn't be marketed as such.</p><p></p><p>It should just be: latest reading is 452 "bits" in interstitial fluid, and we won't tell you what's a bits. You will be able to see it going up and down, but sometimes the trend will be off too. Would people buy it?</p><p></p><p>I think those sort of devices are going to change dramatically the way blood glucose levels are understood, but it seems early stages still.</p></blockquote><p></p>
[QUOTE="TedTomato, post: 1732097, member: 469844"] In term of comparing readings from blood glucose testers and the Libre readings, I have 3 blood glucose testers, so comparisons haven't been done with just one device. The usual justification is: "the Libre is measuring different fluids, not blood glucose etc, so therefore readings can't be compared". This argument makes no sense to me. It's sold as a device to report blood glucose levels, shows readings in mmol/L etc. It's as if I was putting a new scale on the market, and saying "it's measuring weight a different way, extrapolating value to kilograms, and sometimes it's right, sometimes it's wrong". People wouldn't say: don't worry about its accuracy, it's measuring weight in a different way... The Libre is designed to extrapolate information gathered, and display it to patients in units they understand, and they can compare with other devices showing the same units, or results from their doctors. If the device is measuring something else, and can't extrapolate accurately to something known, then it shouldn't be marketed as such. It should just be: latest reading is 452 "bits" in interstitial fluid, and we won't tell you what's a bits. You will be able to see it going up and down, but sometimes the trend will be off too. Would people buy it? I think those sort of devices are going to change dramatically the way blood glucose levels are understood, but it seems early stages still. [/QUOTE]
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Freestyle Libre Sensor: highly inaccurate??
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