Welcome to the board, Jen and Gilbert. He's adorable. First, what are you feeding him? If you are feeding Rx food from the vet, it's too high in carbs, as well as too expensive. A low carb wet food diet is the best thing for our sugar cats, all cats really. Many of us feel Fancy Feast Classics and/or Friskies pate, at least to begin with. There are lots of low carb wet foods available.
You do not have to have the vet's permission to home test, and home testing is going to let you know it's safe to inject the insulin, and how the insulin is working in Gilbert's body. Since he is probably eating high carb food still, he might not be a candidate for a low blood sugar event (a hypo), but better safe than sorry. Many vets don't have enough education in Feline Diabetes, and don't realize that home testing your cat is just as important as testing if you or your child had diabetes. Plus it saves you stressful and expensive visits to the vet. Many of us use a human meter, a ReliOn Confirm or Micro from Walmart. It's affordable and so are the test strips. Lancets are very inexpensive. It takes practice and patience and a lot of treats (low carb for the cat, it's up to you what your treat is

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You can read about using Prozinc insulin in the Prozinc Insulin Support Forum. Just look on the Forum list and scroll down. Read the stickies, they are full of information. Post your questions in the Main Forum, so that more members can see and respond. This Introduction forum is more like a welcome mat on the front porch and not as many members are able to keep watch.
We are here to help.
