Was going to put this in the pumping section, but then I thought and decided it was more about insulin than pumping really, as it applies equally to those on injections.
19 days ago I finished the trial of the Libre and at that time my overnight basal was spot on. I could see it trundling along all night with a fairly straight line and I was waking with FBGs in the 5s or low 6s with the one exception where I under-calculated dinner and even then, although the line was in the 9s, it was still flat. Since then the weather here has turned distinctly colder and for the past 14 days my FBG has rarely been under 7.9 and quite often in the 8.5 range. Plus I have been struggling to get it down all day. That seems quite an abrupt change for a few degrees colder weather... but there it is. I cannot pinpoint any other reason for this.
So I am very pleased to have picked up another sensor today so I can do some basal checking. Had to go all the way to Truro to pick it up from the clinic, but did some shopping in the big Tesco at Pool on the way home so that was OK. I have received this from Abbott as there was some mix up about a further trial and it has come as something of a "consolation prize". I note they must have been getting rid of stuff that's about to go out of date though, as the "use by" date is 31/12/16! So they wouldn't have been able to sell it! Lots of members of the FB group have received stocks with short sell-by dates recently (although longer than 1 month). Not funny if you've ordered in bulk to save on postage.