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Message: <blockquote data-quote="LittleGreyCat" data-source="post: 2086010" data-attributes="member: 6467">First couple of points, purely on the Libre.(1) The changes in BG levels in the interstitial fluid lag behind the changes in the blood. So you end up looking backwards to what you did 20 minutes or so ago to try and explain what the reading means. Going up may mean you are now going down and vice versa. Steady state for over an hour does tell you something, though.(2) My first Libre sensor seems to be reading about 1.5 mmol/L lower than my Freestyle Freedom Lite finger prick BG meter. I am (reasonably) confident that the BG meter is accurate because I have been using it for over 10 years now and I have seen both high and low readings. The Interstitial Fluid Glucose meter (IFG?) is at least consistent.  The depressing bit is that I would be reasonably happy with the IFG readings. Adding 1.5 does not make for happy reading.</blockquote>

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