Lisa, I do apologise for the late reply. This computer doesn't receive messages very quickly at the moment, first it goes through my husband's iPad and if he's not looking at it, it's a while before I know if someone's replied. Don't know why it's like that. As Kris has told you, it's 2.7 mmol and his was at 2.5. Although he didn't show any symptoms other than being very tired, you're right, it's scary and he's a bouncer, so although he went up to 6.5, he went back to 4.5 an hour later, so I'm frightened to leave him for long, although he's now gone up to 10.6 from 4.5 in 40 minutes! Happily, he never refuses food! Thanks so much for your help.