I started on Levemir recently, in part because Mandy had posted her doctor's reasons for using a basal even when fasting numbers are still low. (Thanks Mandy!) yesterday I went out to eat. I did 4 units of Novolog and decided to splurge on some sweet potato fries. I ate a full order- usually I have one or two from my husband's plate. An hour later I was at 96. Must be the fat, I thought, and tested again at 2 and 3 hours. I never went over 100. I have needed to eat really low carb in order to get good post-meal numbers. 4 units of insulin would only cover about 20g of carbs, and I often saw numbers up at 180 after an hour. I thought it was the timing, but now I wonder if basal insulin somehow works together with first phase. I am missing first phase and use rapid acting instead, but had thought my basal insulin was in good shape. Any thoughts?