My cat is 14 lbs. and had a starting number of 571 at the vet. The vet prescribed 3 units of vetsulin 2 times a day. Looking around these posts makes me feel like 3 units might be too high. He gave me the diagnosis over the phone and getting information from him was like pulling teeth. I don't know if he expected me to break down crying, but I just wanted to know my next steps. I found this place to be way more informative. I told the lady at the front desk when I came to pick up the meds that people recommend low and slow and she said that 3 units is extremely low. He seemed to do ok last night but I don't have a meter in yet (strips will be next week before they arrive) and they told me they don't recommend home testing. I gave him 3 units this morning, but I am worried since I can't be there to keep an eye on him. They want to do a curve next week, but I wonder if it is safer to go low until I can check his number at home.