I know everyone has there own story about the 'inaccuracies' of Libre compared to finger prick tests, and I've become a defender of the product as in my view, the differences are immaterial in so much as they don't really change the action you would take.
In my experience the Libre is generally close to a meter in-range and lower than a low meter or higher than a high meter.
I was sure this was down to Abbott's design intentions. This opinion partly because some of the third party sensor apps do seem to be closer to a meter which just slavishly analyses blood.
I'm about to use some ugly figures now, but don't get distracted.
I had a bad evening and when I tested in the early hours of this morning I was 12.2 on the LibreLink app. I took the appropriate action and all was well this morning.
I need to explain what I use.
I scan the sensor with Libre Link. This uploads automatically to Libre View. I have a Diasend account which logs in to the Libre View account and hoovers up the 15 minute CGM readings for my HCPs to view through their Diasend suite.
On my Phone I have a Diasend App too which will look at the Diasend data. I took a look and noticed that there was a spike at 2am as I mentioned but it wasn't as high as 12.2! Hmm. I haven't done so, but I bet if I exported from Libre View the data would show the same.
I'm convinced that what the sensor sees and calculates for the scanner software is much closer to a meter reading, but that Abbott want to help us <?> by emphasising direction of change and encourage the appropriate treatment.
Whether that is true, or whether you want it or not, I believe it does show that the whole interstitial method of testing IS reliable, and for those that insist on wanting matching numbers with a meter, why I don't know, then switching scanning app, or looking at the raw data on LibreView would be a way forward.
I look forward to comments on my theory as I could well be totally wrong, but from experience and what I noted this morning, and have seen before but not realised the significance, I reckon that Libre IS accurate.
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