Hi all, I am a new member although I have been a T1 for 23 years. I have recently started using the Libre sensor - which has been fantastic in enabling me to monitor my BG more closely. Today, however, having been nicely in target range for a while, my sugar did a vertical take off! The CO2 alarm went off in the kitchen for no reason and involved calling in various people to sort it out. On my Libre graph, my BG went from a post-breakfast 6.9mmol/L when the alarm went off to 15.7 in less than 2 hours, without any food or drink! I guess it was anxiety - although I didn't realise that it had made me anxious at the time. Has anyone else experienced this and how do you deal with it? I injected 2.5 units of Actrapid and that did the trick but it was pretty scary. Before I started using the Libre, I probably would not have picked this up as I was in the habit of doing finger prick test before meals, before bed and before driving. Also, at other times when I have had a fright or a shock I have gone into hypo... What makes your BG go one way or the other? Thanks for any insight you can give.