Yes, have confirmed with a finger prick.Hi there @MikeEMike .
Have you done a finger prick test to compare the Libre readings to your BG? The ISF readings that occur within 24 hours of activating the sensor can sometimes be inaccurate.
Regarding your meals, do they contain food that you eat often? If so, how have your blood sugars usually behaved in the past when eating them? Is it any different to what you've experienced recently?

I'm also a user of Novorapid and am currently experiencing similar problems.Yes, have confirmed with a finger prick.
No diet change. This is something I eat regularly.
I skipped lunch yesterday, which could have triggered a Glycogen stores release causing the initial rise, but after 10 units and arriving at 15.8 something is definately not working here.
I took another 7 units this morning, waited 40 mins then had 30g carb breakfast. Hardly any change. Slight drop, then rise again when the carbs kicked in.View attachment 70277
I feel like my basal is okay. In the first photo you can see a good level for most of the day.Have you done a basal test recently @MikeEMike because all these numbers are high? The amount of insulin we need can be affected by changes to weather for some people - I need more basal in winter than summer, other people find the opposite.
If I was to eat when in double figures, I'd have to take a higher correction dose due to insulin resistance, and it takes longer to return to my target blood glucose, so maybe that's happening for you. I use Fiasp and like it, so it's well worth trying. However on the odd occasion my blood sugar is mid teens upwards, it takes 2- 3 hours to return to normal levels
Oh, actually, that's a thought: have you checked the insulin you used to see if it's gone off or is past its expiration date?Im starting to think this insulin has gone bad altogether.
Not expired. I checked this morning. But since I started using the sensor Ive figured that this Novorapid, when it does work, doesn't start bringing down my BGL until at least 40 mins after injection. Sometimes it peaks at 1hr 20min, sometimes at 2 hrs. Its very erratic.Oh, actually, that's a thought: have you checked the insulin you used to see if it's gone off or is past its expiration date?
This applies to me, once I go into double units bg my insulin ratio changes and I need a larger correction ratio than I would need if my bg was say 7...If I was to eat when in double figures, I'd have to take a higher correction dose due to insulin resistance
Oh dear. >< I hope your levels drop soon.Not expired. I checked this morning. But since I started using the sensor Ive figured that this Novorapid, when it does work, doesn't start bringing down my BGL until at least 40 mins after injection. Sometimes it peaks at 1hr 20min, sometimes at 2 hrs. Its very erratic.
BGL now at 17. FML.
Hi
You have my sympathy.
When our body flips in and out or resistance it drives us potty.
My body is mine alone and once i got my beloved libre i worked the following out......
My insulin needs regular activity to work as it should.
I average out 18000 steps per day and approaching 6pm i have done most of those steps.
I am so sensitive at 6pm i often take my novorapid after i have eaten as it works that quick.
Its like i need that days activity stored away somewhere then along comes the novorapid and carbs and they all play well together.
It sounds silly but thats the only way i can describe it.
At weekend i am much more sedate and don't eat during the day and take more novorapid for my evening meal.
When i was about 10 (i am 57 now) i lost half a stone in 6 weeks and the doctors got v worried.
It was good weather and i had played tennis every day for the six week holidays.
Insulin was a different animal (quite literally) back then but that same principal can apply......
My body needs to be on the move.
Whilst i have waffled on about myself that is what diabetes is and why there are so many different insulins out there.
I wish you well
Tony