If you are unsure can you contact your dsn or another health care professional? You might also consider carrying out or asking about ketone testing. Good luck.
Then you should be ok. Follow the sheet's instructions and if in any doubt whatsoever give slightly less insulin than suggested - or none at all if you're not confident doing so.
Do NOT do a correction dose of you've done one recently as that insulin will still be working.
If you're confused, you need to speak to your DSN as they can explain more and make sure you're doing everything ok.
Hi @Alex_B . The fact that you have asked the question would suggest that you should have a chat with a DSN at least. Correction doses are commonplace BUT you have to consider so many variables.
Last food eaten.
Time of last injection.
Location of last injection.
Upcoming commitments.
Possible reasons for high BS reading.
On a personal level I have done a correction dose before and an hour later been dropping faster than a brick without a parachute. That's with 20yrs plus experience.
Take care whatever you decide to do and check regularly.