I'm no expert on basal testing, @MrBloominggrumpy but there are people here who are. You could do a search and read some threads. I have a pump so it's slightly different for me. But basically even if a person with diabetes didn't eat, their blood sugar would rise. The basal/background/slow insulin controls this. If you never ate, it should keep your blood sugar level. The bolus/fast insulin just deals with your food.
(FYI, the reason people don't just say fast and slow insulin is that when people are on a pump they only have fast insulin in it. This fast insulin does both jobs and acts as a basal/background and as a bolus/meal insulin. I hope that hasn't confused things mentioning that)
(FYI, the reason people don't just say fast and slow insulin is that when people are on a pump they only have fast insulin in it. This fast insulin does both jobs and acts as a basal/background and as a bolus/meal insulin. I hope that hasn't confused things mentioning that)
The (non diabetic) pancreas only has fast acting insulin in it. It squirts out tiny amounts of this loads and loads of times a day to keep blood sugar under control. This is what an insulin pump does - works more like a pancreas by giving the person hundreds of tiny bursts of fast insulin automatically, and extra when you eat (controlled by the pump user, not automatic)
...but you have explained brill thank you ...and notwinding you up...am on radio ...on air right now as we do this too...men multi tasking....scary.. so sorry for sort Qs ...but you are being fab ..loads