well I was just looking at my insulin bottle, and on the side written in red is say U-40, but the vet has me using U-100 syringes. up until just yesterday, I had not been testing at home, and instead dosing what she told me to based on his most previous vet visit. So if I am using U100 syringes does that mean that each unit is greater or less? Also how does that affect the dosing? I called my vet this morning and told her that I had been worried about the *unit dosing and that I picked up a tester just to double check at home. She said that the human testers are somewhat different and that if I am seeing 60 on his relion meter, then he is probably more at a 105-110. Is this true in your experience? I'm really still just trying to get all my facts straight and get Nolan on the right path so any insight is greatly appreciated. I did test his this morning and he was at 372 at 6:30, I gave him 5 units at the advice of my vet (I told her I was too worried about the diet change to continue at 8 units) at +2 he tested 364/369 (sometimes I like to double test if there is enough of a blood sample) and then at +6 I tested him and he was 226/195. So he is still high, but the vet thinks I should keep him at 5 units for a while as he adjusts to the wet food. So there is all the information I have so far, thanks in advance for your suggestions and help!