[neverdem]

When you can make insulin any more, you won't have any peptide C on the lab test.

Should have been: "When you can't make insulin any more, you won't have any peptide C on the lab test."

That is when type 1 is suspected, peptide C is checked. Below normal levels of peptide C supports a type 1 diagnosis. GAD antibodies will confirm it or LADA.

Within the endoplasmic reticulum, proinsulin is exposed to several specific endopeptidases which excise the C peptide, thereby generating the mature form of insulin. Insulin and free C peptide are packaged in the Golgi into secretory granules which accumulate in the cytoplasm.

[djf]

“can’t make insulin any more...”

That’s when your blood turns into something resembling high quality 90WT gear oil...

I have always believed, and remain convinced, that everybody should fast a few days a month, like 3-4

Reset the clock. Clean out the junk. Clear up the chemical pathways, that sort of thing.