Thanks for all your replies, very interesting. He has already done some night time blood testing and we found his sugar was just rising and rising every 2 hours. The next day he decided to eat nothing at all until lunch time and still the blood sugars kept rising until he was over 20! ... We really can't understand why the sugar level comes down in the evening because surely by then the Lantus would be running out?
As, Lantus is supposed to last better than most (although, as per many previous posts, it doesn't seem to go the whole 24 hrs) then surely - if it's taken around 9-10pm the dose will at least last until 6am the next morning!?! Furthermore, evidence suggests that if you don't eat then the body will begin to produce glucagon to dump sugar from the liver and ketones turn body fat into glucose. So, his morning highs could be the result of his body's own mechanisms - see this link:
http://www.diabetes-support.org.uk/info/?page_id=143
As Mrs of Type 1 replied, his morning BG's continued to rise when he did the fasting / basal testing - as the article in the link states (under "Dealing with Dawn Phenonenon"): "5. Lastly,
EAT BREAKFAST. The resulting increase in blood glucose from food will often turn off the continued rise. If you don’t, some diabetics will continue to rise until 10-11 am."
Interestingly, that article then talks about the "
SOMOGYI EFFECT" (severe hypos in the middle of the night and subsequent early morning highs).
One has to consider injection sites and absorption ratios (i.e. different parts of the body will result in differing speeds of insulin release), food types eaten at tea time and the insulin given to compensate, as well as the possibility that he may have gone low in between blood tests and is already on a rebound when testing before bed. (Depending on his thresholds and his recent run of high BGs, his body could have reset its hypo triggers to a higher level - say 6mmol instead of 4.5 or lower.)
[quote="Mrs of type 1, post: 481632, member: 84279"Last night he done something he was told never to do, he took 2 unit's of Novarapid before bed, he was 14 due to not enough Novarapid when he ate crackers and cheese ( can't believe how much carb is in a cracker) Well it worked because this morning he was at 9 which is so much better than the usual 16+[/quote]
As Novorapid starts working from around 20minutes after dose for up to 5 hours after, it is quite possible this 'special' dose contributed towards curbing a rebound... but it may also be compensating for insufficient basal / shorter life cycle of lantus in him. Who's to know for certain? Only time and testing will tell.
But as I stated before - and others have also related in this (and many other threads), each one of us IS different and none of us should assume to know anothers body with any degree of certainty - suggesting possibilties is one thing, but certainty???
Well, put it this way, when I went through severe problems, my lantus basal dose went up to 36 units (I'm 181cm and
was 72kg at the time), yet my BG's would hit 33.1mmol during the day and the only symptom I would have is anger! My body's hypo warnings were triggered at 13-14mmol and only constant bolusing during the day would keep me down. Was there something wrong with the Lantus? No, it was just that my body was not suited to it and the stress of everything made it all worse.
I wish Mrs of type 1 and Mr type 1 the very best of luck and patience, because when you're stuck in that cycle it is hard to see the wood for the trees.
Nothing like making it easy for us! 
