Hi to you and Spidey and welcome to fdmb

This is just the welcome page and it looks like you need quite a bit of help so if you could tell us a bit about Spidey and then post that info over on the Main Forum....link below......we will be able to help you get on the right track.
If you are using a human meter like the ReliOn one from Walmart...the normal reading for a cat is 50- 120. If you are using an Alphatrak meter it will be about 68 - 150. We recommmend using a human meter.
But you will find that Spidey's readings will be probably quite a bit higher than these normal reading because these are the reading of a cat without diabetes. The insulin will help bring the blood sugar readings down but this happens over time. If you are testing every day you will get a much better idea of what he needs. It is much cheaper and safer to do the testing your self. We can help you with that and also sort out the dose. It is possible she is getting too much insulin but the only way to find out is to test. Getting a test done at the vet every so often does not give the full picture.
Could you tell us
* what type of insulin Spidey is on?
*what dose did she started on?
*how did you increase the dose......in 1 unit lots or less?
* when you say 6 pts of insulin.....do you mean 6 units?
*what food are you feeding? Wet or dry?
*what is her normal weight, and what weight is she now?
*has she only had the diarrhoea since being on the special diet?
*has she ever had ketoacidosis?
* do you test her urine for ketones......buy a bottle of Ketostix from Walmart or pharmacy and test the urine as per the instructions on the bottle.
Here is the link to the main forum....hope to see you over there....lots of experienced people who are only too willing to help and support you
http://www.felinediabetes.com/FDMB/forums/feline-health-the-main-forum.28/