Please help me understand this. So I am of the understanding that the dexcom reading is about 15 to 20 min behind( let’s say 15 mins for this example). Now the novorapid takes 20 mins before it takes effect. So in theory if I take novorapid at 1pm, my insulin takes effect at 1:20pm and given my dexcom is 15 min delayed, i won’t notice a drop in my BG until 1:35pm. Right?
But the thing is, I notice a drop in my BG on the dexcom exactly at 1:20pm. Consistently 20 mins after injecting insulin all the time. So how come there is no dexcom delay?