Very interesting stuff.
Scratch - thanks for the maths breakdown; helps to clarify things for me on this subject.
Personally, I'm on novorapid which is supposed to be a bit quicker than humalog. I find with most meals that it is all used up by about 2.5 to 3 hours. Certainly once I get to hour 3, my BG does not seem to go any further south.
If I'm low at hour 2, I sometimes go hypo, sometimes not. I am guessing it is to do with the GI of the meal you have eaten, though I'm willing to listen to other theories
Which brings me to Apridra. I'm really interested in this and would like to find out more. I like the idea of something that works like crazy for 2 hours and then leaves you alone. I would imagine the only problems come if you have eaten a nice, healthy, low GI meal (or something awkward like pizza etc). Would apridra make you immediately hypo and then leave you high as a kite two hours later?
Belyro - do you try and eat low GI? If your carbs for a meal come from the slow stuff like beans, is your 2 hour BG better than if your carbs came from pasta?
Gary