Hi there
Glad to hear the most recent ketone test was negative however his breath smelling of acetone has me concerned. Please re-check at your earliest opportunity.
If you are not already doing so add as much water to his food as he will tolerate
I want to caution you not to make the mistake of thinking Toby is out of the woods based on one test.
I recommend testing a minimum of 2x per day for a kitty battling ketones - if you can test more often all the better. They are sneaky.
If you are having difficulty catching him at the litter box, consider getting a BG meter that also checks for ketones in the blood.
it gives you an earlier warning being that if ketones are present they can be detected in the blood sooner than the urine.
The name of the meter escapes me - I'm sure someone will come along with the details for you, if you don't already have them.
My Black Kitty went into DKA twice early on - he was one sick kitty. It took a lot of work but eventually we got the ketones behind him.
If you look at his ss from May -July 2008, you will see how quickly negative ketones can develop into large.
Below is an example of a 24 hour period beginning 06/22/2008 at PM+1:
On 06/25/2008 he was hospitalized - for the second time, just about 1 month after the first DKA episode.
You may have noticed, on BKs ss, that I was giving a second insulin - R (short for Humulin R). It's a powerful fast acting insulin with early onset and short duration.
It's a tool you should add to your arsenal. We can guide you on how to safely use it.
Fur shots happen but for a kitty battling ketones they can tip the scales in the wrong direction. A bottle of R in the fridge can help reduce the fallout from a fur shot and get a ketone prone kitty safely to the next L shot time.
You don't need a prescription (in most states) and it's not as expensive as the L although I'm not sure of the cost these days (back in our day it was about $35).
It's not fragile like L and it lasts forever. Call your pharmacy and make sure they have it on hand before you make a trip to purchase.
This is an 'intensive care" situation requiring close BG monitoring around the clock, which you are doing. Well done!
it''s also a battle - take no prisoners

We will do all we can to help you fight.