Hi, I have also done DAFNE course, also on Lantus as you say the background has to be correct to be able to work out your ratio for QA isulin felt I had to fetch this to your attention,I questioned the use of Lantus twice daily and was told it was not licensed to use in this way,(dont want to worry anyone so maybe someone out there knows more about this) the week proved the Basal was not working the full 24 hrs for me so my Basal was changed to Levemer twice daily 8 at am 8 at pm, this has worked brill and my bg levels are more stable through the day.