I've been having hypos late afternoon/ early evening for a week or two, last week after keep putting it off, I decided I really must tackle basal testing during the afternoon, and bingo it stopped so I didn't. Now it's back.
Susan - I reckon esp with a pump - you can definitely say nearer 5 hours. Plus FWIW I have never experienced a 'sting in its tail' like some get with Humalog, with N it's much more a gradual tailing off over the last 2 and a half hours for me. And the Roche meters/pumps, even when calculating the IOB for correction doses - haven't got it right - always tells me there's shedloads left right up to 3hrs 45 after I jab it (because I haven't altered it from 4 hours since because I ignore the IOB anyway and do my own thing, it doesn't matter - or at least, doesn't seem to) I know it's wrong because if there was as much left as it says, it would get rid of whatever I ate. It's a flippin nuisance really, cos then if I think Oh I'll have eg an apple 2 hours after a meal, and there was a correction for higher BG in the bolus for the meal, it will say there's some of that left and knock it off the bolus it calculates. So consequently, I often don't bother to test and just bolus straight into the pump, for exactly what I need for the apple. After I eat it, I turn on the handset, go to My Data so it picks up the bolus from the pump, then amend that entry to add the carbs for the apple - otherwise at bedtime, it will think I have spare IOB cos it will think the apple bolus was a correction.
JHC!! to quote Holden Caulfield - why do I bother having a frigging pump!!! (Yeah yeah - basal requirements ....)
But you are right - it's only because I knew what I was doing before I had the darn thing, that I've been able to do this in the first place - I wouldn't expect you to know, how could you?
But - anyway! - as blinking always - YMMV !!
