Hi
@Fenn I'm glad they are running the C peptide, they probably want to know if you are producing any insulin still. What seems to happen after time I believe is the pancreas can give up, wear out? and a type 2 can then be insulin deficient, Although I believe it's rare that they stop altogether. And even when a type 2 is not deficient in insulin production and is over producing, a type 2 can respond well to injected insulin. But a type 2 losing actual insulin production abilities is an over time, years thing.
I think the difference here is she was just barely diagnosed last year, so it's doubtful that as a type 2 she lost the ability this soon unless she's a type 1 instead.
But it would be nice if they ran an antibody test on you too. The honeymoon phase in a type 1/LADA can last years, 8 years or more. Change of diet, medications work at first because you still produce some insulin. Some theories out there suggest if you low carb you ease the burden of the pancreas and it lasts longer before it gives out, people purposely do that to stretch out the honeymoon phase and avoid insulin for longer.. Sometimes that works and sometimes it doesn't.
In my case I was misdiagnosed for over 8 years. My Bg starting to be elevated was caught very early and at lower levels. I ended up on medications that made me sick so I refused them and was then put on insulin, but not until after 4-5 years from initial diagnosis. I was put on insulin even though they thought I was a type 2 because my blood sugar levels started to shoot up and I had refused the meds. It's highly possible to go that long without insulin because you still make some for years as a type 1/LADA a lot of the time. And while most need insulin within 3 years of diagnosis that is not always the case. If you were put on insulin after about 5 years of diagnosis, you could still be a type 1 instead of a type 2. I have now run across other people that were misdiagnosed a lot longer than me.
Honestly I would ask about a test for antibodies if your c peptide comes back low.