Hi @roger_37 what meter are you using?
Most meters only tell us our current BG and we have to do the arithmetic to calculate insulin dose. Your question suggestions you have a fancy meter that does more.
The only way is to work it out manually. Do you know your insulin to carb ratio, and your correction factor(how much insulin to give to reach your target level).
If your unsure of any of this, I'd ring your nurse or 111 for advice.
its a dario app on my phone, once you do a drop of blood on the lancelet on phone , you put in amount of carbs then the app/meter tells you the amount of insulin to take, but it stopped working that my question can it be fixed?