I used to give J.D. 12.5 units using my u100 insulin syringe. Is that 0.125ml? I just did some searching through my spreadsheet a little, and found I gave him from 0.125ml to 0.17ml every other week. Sorry, it's been so long.., I don't remember the reason for the fluctuation, but from looking at my spreadsheet it looks like I wrote 0.125ml is 12.5 units on a u100 insulin syringe.