Recently I did a quick blood test using one of those small machines with which people with diabetes regularly monitor their glucose levels (a relation of mine has this machine because she's been diagnosed type 2 diabetes). The result was 145 mg/dl, which surprised me quite a bit as I do all the usual blood tests at a hospital lab once a year and the glucose level has always been found to be normal (last time it was 77 mg/dl). About an hour and a half before doing the quick test with the above mentioned machine however I had eaten three small buns - these contained among other things, raisins, milk and of course quite a bit of sugar. Assuming the machine was working correctly, could the high glucose level have been caused merely by this acute episode of gluttony? Or would it be sensible to see a doctor/do other tests? Thanks for your advice. PS I'm in my early 30s.