Thanks! I was hoping someone could give you an answer, because I hadn't even heard of c-peptide before, and I found no info on CFRD and c-peptides when I googled it.
Hmmm, I wonder if normal c-peptide numbers indicates that you are producing the right amount of insulin, but a high A1C means that it is just getting out too slowly- a question for my first endocrinologist appt. this week, I guess.