First off, good work for doing post meal testing. I think this is one of the most useful things you can do.
I believe the standard is 2 hrs after as well described here.
I have a different approach which seems to work for me. I test to get direct readings from my own metabolism about which foods and which combos produce a "bump" and which ones don't so I can adjust what I eat and don't eat accordingly. I have found 30 min and one hour gives me the most info and that, for me anyway, the bump show is pretty much over at 2 hrs for most things I test now.