I also would dismiss that high as a dodgy test and not give it any further retro analysis. When I get an unexpected result (highs particularly) I just routinely retest straightaway and proceed from there.
By straightaway I am very concious that if something or someone can interrupt me this will happen! So if I need the retest to confirm my bolus calculation, I'll be pretty resolute and not let that interrupt, just so I can get a pre-bolus underway. Otherwise if I just want to clarify a reading as part of that semi-continuous background monitoring then the retest can take its turn amidst the other potential interruptions!
Google is saying its a hormonal thing. Is the fact that it isn't actual sugar/carbs a good thing or is the high reading regardless the bad thing.
Just a note of caution about Google searches in relation to diabetes: a lot of varied opinions can come from Google and by no means are all of these views correct - but they can be written so that they feel absolutely correct! Diabetes can be a pretty abstract topic! Additionally the effects of caffeine are something that you can get 2 GPs providing different opinions on - so you are in a bit of a minefield anyway. I suspect caffeine could affect any one of us quite differently: different effect as a stimulant, different blood pressure and blood glucose responses, as well as different timings for any responses.
Also forgot to add that my wake-up BG was 6.2 and I'd normally test before my coffee so this might have been going on for a while. Going forward should I test before or after my coffee (might be giving it up to be honest!)
I suggest the best way is to be consistent - either always test before or after coffee. I suggest don't give the coffee up, unless you are fine with that or have proved after a series of repeat tests that coffee is definitely the cause of an adverse reaction. Also coffee can dehydrate you (and I know from living in different European countries) that people frequently routinely drink a good sized glass of water with their coffee. I note you had been for a run and if you are assessing from a series of tests what is going on, do consider having a consistent "wholistic" approach: ie when you've exercised each time, when you've rehydrated after that exercise, similar time intervals etc. I'm not saying do all of this to a stopwatch! But try to recreate a fairly similar pattern of events, to give yourself the best chance of identifying a pattern.
You are now in a marathon and a little time spent exploring your boundaries should put you in a great place for pacing yourself through that marathon. As your body adapts to your different regime, you may find your basic metabolic responses alter, so repeat experiments could be appropriate after a few months. Good luck.
