| It's 2 hours from when you finish eating. Insulin doesn't react or work in part with food. It works whether or not food is in your body.
So if you take 5 units of insulin 10 minutes before you eat. It will last 4 hours (rough estimate for humalog) from when you took it. If it takes you 2 minutes to eat, then the food effect will pretty much peak at the same time the insulin does. If you take 2 hours to eat, then the insulin will show you running low 2 hours after taking it until all the food has time to catch up with it.
Basically what the 2 hour testing is for though is to make sure you aren't running high. So if you test 2 hours after first giving the shot, or 2 hours after you finish eating, neither time should you be running more than 40 mg/dl of what you tested before you ate.
__________________
●Blue Ash, Ohio Police Dispatcher
●Type 1 diabetic for 25 years (11 months old)
●Animas pumper since December of 2002
~IR 1000 (Dec. 2002-Jan. 2005)
~IR 1200 (Jan. 2005 - ?)
●LifeScan OneTouch UltraSmart Diabetes is an Art, NOT a Science. You must master the control by skills and not by knowledge alone. | 
