What's your name? Or do you want us to just call you "squiffer?"
Some of us are talking about Titi's dose. Now that you've got the numbers in the spreadsheet, it really helps to be able to see the big picture. Thanks,
@Marje and Gracie for doing that!!! You're an angel!
Believe me, you are not the first person to arrive here not knowing anything about Feline Diabetes - most of us were in the same boat. We were using the wrong type of syringes with punkin and he was actually getting 2.5x as much insulin as we thought. It's not uncommon for vets to not understand how to dose with the depot insulins, Lantus and Levemir. So many people euthanize their cats when they are diagnosed that I doubt vets actually get much experience with it. Much of the dosing isn't very intuitive unless you understand how a depot insulin works. Don't worry one bit about anything that's happened in the past - there is no one judgmental here - people will just tell you what you need to know so you can help your sweet TiTi move forward. It's certainly not your fault that your vet didn't know how to guide TiTi's dosing. Fortunately, there is a wealth of experience here and people will help you.
I want to tell you a little about high numbers. Not all high numbers mean that a cat needs more insulin. That's the first counter-intuitive thing about diabetic cats. When a cat's body gets used to high blood sugar it begins to perceive that as the normal range. If they are always over 400, the body will begin to accept that as normal.
Then when something happens to move the cat lower than that range, say to 200, the body perceives that this is a hypo and will release stored sugars and counter-regulatory hormones to raise the cat's blood sugar back up high. We call that a "bounce." It's a survival mechanism that serves the cat well in many cases. In any case, this is one circumstance where high numbers don't require more insulin. The cat's body will usually clear out those excess hormones and sugars in 3 days or so. Then the blood sugar will drop back down. There is a little more explanation of bouncing in the
second post here.
A second cause for high numbers is something we call "New Dose Wonkiness." That scientific term, lol, is used to explain what happens when a cat experiences high numbers after a dose increase. For whatever unknown reason, sometimes when a dose is increased, the cat's blood sugar will go high for a day or so. There is an explanation of that in the first post on the link I gave you in the paragraph above.
A third cause for a cat to have high blood sugar is if the cat is overdosed. There are times when the dose has been increased too quickly, or in too large of an increment, or when the increase is not needed, and the cat's blood sugar can go high in response.
Bless your heart for taking in so many cats. Thank you for your big heart!