Hi
@Lainie71 you can't take a single reading from the Libre as gospel, if you keep testing at regular intervals, check back in the Logbook and you may well see that the scan 'dot' is nowhere near the actual levels when the anticipated level is replaced by the real level (in simple laymen's terms
).
There is only a couple of minutes 'lag' between a finger prick test and what you would get on a Libre scan, the 15 minutes is the adjustment time of the Libre on itself.
Here's a bad day on the Libre - but the actual graph shows the adjusted actual levels:
View attachment 61195
Hope this makes sense. If the graph and dots match but the glucose meter values all disagree, give Abbott a call and they will work out if its faulty.