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FreeStyle Libre - My Life with the Machine
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<blockquote data-quote="Peter_Sylvester" data-source="post: 1610742"><p><strong><u>Libre: Reading variations </u></strong></p><p></p><p>On this forum, I have been seeing various comments about the accuracy (or otherwise) of Libre readings by comparison with actual blood test readings - so I thought that I would conduct my own little experiment..!</p><p></p><p>Over a 3 day period, I conducted a comparison of the Libre readings against a separate Nexus test strip meter.</p><p></p><p><strong><em>The results were interesting..<u>.</u></em></strong></p><p></p><p>(1). When the Libre readings were within my “target range” (5.0 to 9.0) I found that the difference between the two systems was +/- 0.2 max. The closer the reading was to the “median”, the closer the two readings were</p><p>(2). When Libre showed a substantial spike upwards, it seemed to exaggerate that reading by comparison with the Nexus reading. The biggest difference from the four times it happened was +0.9 greater than the Nexus reading</p><p>(3). Similarly, when things started to go low, the actual blood reading according to Nexus did not go as low as the Libre reading ( Libre 3.9 v 4.8 Nexus)</p><p></p><p>So if my little experiment is any indication, then Libre exaggerates the highs and lows, and when it is “within range” seems fairly consistent with the Nexus machine</p><p></p><p>I put this out there without any causal or analytical conclusions - it is far too early for that.</p><p></p><p>However, my personal reaction was fairly positive - I took reassurance from the “fact” that when I deviated from my central path, I was neither as high or as low as the initial Libre warnings showed</p><p></p><p>Peter</p></blockquote><p></p>
[QUOTE="Peter_Sylvester, post: 1610742"] [B][U]Libre: Reading variations [/U][/B] On this forum, I have been seeing various comments about the accuracy (or otherwise) of Libre readings by comparison with actual blood test readings - so I thought that I would conduct my own little experiment..! Over a 3 day period, I conducted a comparison of the Libre readings against a separate Nexus test strip meter. [B][I]The results were interesting..[U].[/U][/I][/B] (1). When the Libre readings were within my “target range” (5.0 to 9.0) I found that the difference between the two systems was +/- 0.2 max. The closer the reading was to the “median”, the closer the two readings were (2). When Libre showed a substantial spike upwards, it seemed to exaggerate that reading by comparison with the Nexus reading. The biggest difference from the four times it happened was +0.9 greater than the Nexus reading (3). Similarly, when things started to go low, the actual blood reading according to Nexus did not go as low as the Libre reading ( Libre 3.9 v 4.8 Nexus) So if my little experiment is any indication, then Libre exaggerates the highs and lows, and when it is “within range” seems fairly consistent with the Nexus machine I put this out there without any causal or analytical conclusions - it is far too early for that. However, my personal reaction was fairly positive - I took reassurance from the “fact” that when I deviated from my central path, I was neither as high or as low as the initial Libre warnings showed Peter [/QUOTE]
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