Hello greenbean and welcome to FDMB,
I used Vetsulin for a brief time last summer and looking back it was a wild roller coaster ride.
It's really important that you are testing before EVERY shot so you know where the numbers are
before you put insulin into the cat. The sequence is test, feed, wait about 30 min, shoot. Waiting to shoot until after the cat has eaten gives the body a little time to start working on the food before the insulin arrives. My understanding is that Vetsulin needs food to work properly.
Vetsulin, in my limited experience with my cat, acted very quickly and dropped his number like a rock. My cat needed a substantial meal before the shot and then a strategic meal as soon as 1.5 hours after the shot. This strategically timed meal kept him from dropping into too low and dangerous numbers. My suggestion is that you always leave food out for him to eat especially when you are gone at work.
When you are home on days off or in the evening or on weekends, it will be very useful to do extra testing so you know better what is happening to the numbers and when. When I started testing more, I learned to be strategic instead of reactionary.
It's also very important to get a spreadsheet going where you will enter the numbers from all your testing. It's color coded to help you see patterns and trends. At first it will all be a jumble, but with time and help from the awesome people here the ss will begin to make sense. If you take a look at my signature you'll see where Radar's spreadsheet is. click on it and you'll see his numbers from our current insulin. If you go to the bottom and click on 2015 you will see the data from when Radar was on Vetsulin. When I was new to all this, it was helpful for me to see another person's ss so I could learn what happened with another cat and what I was aiming for since my head was spinning with sooooo much information.


Here are the directions for setting up the ss. If you need help, let us know.