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<blockquote data-quote="Brunneria" data-source="post: 2213606" data-attributes="member: 41816"><p>My Libres almost always read 1-1.2mmol/l lower than my glucometer readings, and my HbA1cs.</p><p>It is very consistent.</p><p>So I agree that there is a clear disparity between blood testing results by fingerprick and interstitial fluid results by Libre.</p><p>This may be down to the individual person's body. My results are far too consistent to blame manufacturing variations for the sensors.</p><p></p><p>Having said that, I have bought a miaomiao in order to calibrate the Libre readings, and feel that people who rely on the sensor to guide them on insulin doses, especially for low readings, should bear these potential inaccuracies strongly in mind.</p><p></p><p>As for the claim that there is</p><p><em>a 15-20% tolerance on any kind of home measurement</em></p><p>I am afraid the situation is much more complicated than that.</p><p>This link explains things in more detail</p><p><a href="https://www.diabetes.co.uk/blood-glucose-meters/iso-accuracy-standards.html" target="_blank">https://www.diabetes.co.uk/blood-glucose-meters/iso-accuracy-standards.html</a></p><p>and it is important to bear in mind that the ISO accuracy standards apply to blood glucose meters.</p><p>They do not apply to interstitial fluid meters.</p><p>If anyone has the equivalent standards published for interstitial fluid meters/sensors I would love to read them, so please post a link. Thank you in advance.</p><p></p><p>This is the info that Abbott have on their international website about accuracy</p><p><a href="https://provider.myfreestyle.com/freestyle-libre-clinical-evidence.html" target="_blank">https://provider.myfreestyle.com/freestyle-libre-clinical-evidence.html</a></p><p>I have to say that my experiences and my body to not align with their statements, although the miaomiao helps a great deal.</p></blockquote><p></p>
[QUOTE="Brunneria, post: 2213606, member: 41816"] My Libres almost always read 1-1.2mmol/l lower than my glucometer readings, and my HbA1cs. It is very consistent. So I agree that there is a clear disparity between blood testing results by fingerprick and interstitial fluid results by Libre. This may be down to the individual person's body. My results are far too consistent to blame manufacturing variations for the sensors. Having said that, I have bought a miaomiao in order to calibrate the Libre readings, and feel that people who rely on the sensor to guide them on insulin doses, especially for low readings, should bear these potential inaccuracies strongly in mind. As for the claim that there is [I]a 15-20% tolerance on any kind of home measurement[/I] I am afraid the situation is much more complicated than that. This link explains things in more detail [URL]https://www.diabetes.co.uk/blood-glucose-meters/iso-accuracy-standards.html[/URL] and it is important to bear in mind that the ISO accuracy standards apply to blood glucose meters. They do not apply to interstitial fluid meters. If anyone has the equivalent standards published for interstitial fluid meters/sensors I would love to read them, so please post a link. Thank you in advance. This is the info that Abbott have on their international website about accuracy [URL]https://provider.myfreestyle.com/freestyle-libre-clinical-evidence.html[/URL] I have to say that my experiences and my body to not align with their statements, although the miaomiao helps a great deal. [/QUOTE]
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