What kind of insulin action do you see...and what do tails look like for you? I'm fascinated...or frustrated...with the way each of the insulins act in my daughter's body. I realize it's different for everyone. Humalog gave us nice smooth rises and falls, with a 4 hour duration. By hour 3, I could tell if she was coming to target on the Medtronic IOB calculator. Novolog was similar but not as smooth. It went up smoothly but came down in drops, flats, followed by more drops. It was a bit hard to tell when the insulin was done acting at times. Apidra doesn't seem to have the fast action others write about. It seems to be at four hours. It almost seems the spikes are faster and the drops are faster but also that she flatlines at the top of the spike for longer. We need to do lots of basal and settings testing next week, but thus far we're getting really fast drops needing lots of carbs around 11 p.m, but then the rest of the night is going really well. We've slept through the night more times in January than we did the entire month of December. I guess part of what I'm looking to learn is whether Apidra dawdles and then comes back with a kick unexpectedly later? I've never seen what we're seeing now, but like I said, we need to do lots of testing.