Hi
Here is one journal I found.
http://journal.diabetes.org/diabetesspectrum/00v13n3/pg132.htm#:~:text=Protein requires insulin for metabolism,additional small amounts of insulin.
I was trying to have excess protein to build muscle, as the more muscle you have the better your insulin sensitivity is.
They recommend 1.2-1.7 grams per KG of body to build muscle. I tried 2.5 grams. I personally found with low carb, I have no spikes but when I increased my protein up to 2.5 grams per kg, I found my BG levels was rising.
I also found it was taking my out of Keto as well, I measure my ketones levels as well as blood glucose.
But when I dropped back to 1.5 grams give or take my blood glucose level returned to normal and I was in keto.
It is very hard to consume a lot that amount of protein though. Bare in mind a chicken breast is about 31 grams of protein (100 grams of chicken).
So my target at the was 200 grams (6 chicken breast give or take), which is a lot of protein, compared too. 120 grams which is what I should ideally have gone for.
I hope this long winded reply make sense.