Got my latest lab results. First, I am super happy, because my HbA1c is 5.1% With few hypos!
My C-peptide level was 0.46 ng/ml. That was at fasting state (this is required prior to taking the sample). The blood sample was taken in the morning, so I had bolused for the morning BG rise previously. In August, the level had been at 0.81 ng/ml.
The thing is, my insulin needs have increased significantly since then. I was taking about 10-12 units of Tresiba back then. Now I need 20-21. My I:C ratio did not change all that much, it mostly just increased in variance over the day. And, morning BG rise was not present back then, but it is now. The amount of basal plus the morning rise indicate a fading honeymoon to me … but 0.46 ng/ml sounds like there’s still a significant amount of endogenous production going on. If so, where is it, why do I need that much more insulin? It is also noteworthy that I haven’t gotten more insulin resistant. 1 unit still brings my BG down by ~40-60 mg/dL. So, any ideas? Or is the C-peptide level completely meaningless here?