New Member. Question about timing manual tests on Bexacat

[seashellseller]

Hello! My name is Orla, and this is my cat, Binx or Binky, she responds to both. She is 10 years old, fixed, and I adopted her 3 years ago. She is 15 lb and a very sweet and affectionate girl. Before her diagnosis she was eating an all-kibble diet, and she was eating the weight loss portion for her age/weight but was not losing any weight, just maintaining… Then out of nowhere she dropped around 3 lb in just a couple months prior to the diagnosis. She had always been a pretty good water drinker so I didn’t really notice her drinking more water. I did notice her peeing more though. On December 7 2025 the vet did some tests and confirmed she was diabetic. The vet started her on Bexacat that day and said that home testing wasn’t a bad thing, but just not necessary. However, after a month on Bexacat with just once weekly vet visits for BG and ketone tests, I was feeling like I needed to do/know more for the sake of my kitty. I decided to do some research and found this website and the FB group.
Since being diagnosed, she is now on a half wet half dry diet. For wet food she eats Tiki Cat pate, and for her dry food she eats Petcurean Go! weight management and joint health kibble. She gets her Bexacat right before dinner. I started home testing in January and right now she has a Libre 3 sensor for the vet to check up on her remotely (hence the t-shirt in the picture). I manually test her glucose and ketones at least once every day: once before I leave for school in the mornings and if/when the Libre gives me a low reading.
I know bexacat doesn’t function the same way as insulin does, so my question is, with her on Bexacat is there an ideal time for me to be testing her? Should I test her before giving it, or after giving it (or both?) I still want to be testing her before I leave for school as well. So how many times a day/what times should I be testing kitty once the Libre ends?
Cat photo attached.

 

[Tim & Pookey]

Bumping you to the top and also curious about the answer. I’ve never used Bexacat but always thought the bigger thing was testing for ketones. More generally, if you’re not testing BG then how do you know if she’s low enough to stop the med? Not sure.

Binx is so cute. I might need to buy some shirts.

 

[seashellseller]

Bumping you to the top and also curious about the answer. I’ve never used Bexacat but always thought the bigger thing was testing for ketones. More generally, if you’re not testing BG then how do you know if she’s low enough to stop the med? Not sure.

Binx is so cute. I might need to buy some shirts.

In terms of of testing I do BG and also test for ketones when I test her daily before I go to school. When the Libre 3 gives me low BG readings I usually just check BG. I just didn’t know if there was a specific time/times to test her BG or ketones like there is with insulin.
The shirt is mainly to stop her ripping the Libre 3 off within days (which is what happened last time)… I’ll tell you guys from experience the price of a small dog shirt from petco is much lower than a replacement sensor and vet visit to apply it LOL

 

[Sienne and Gabby (GA)]

We haven't had that many people using Bexacat. I'd ask your vet (or call the drug company) and ask when the nadir is for Bexacat. With an injectable insulin, you want to test at the lowest point in the cycle (i.e, the nadir) so you know how low the numbers are going. I would follow the same logic with Bexacat.

You do not need to have your vet install a new sensor. This is a post on getting started with a CGM. It may help with some of the logistics. At the bottom of the post, there's a section on Resources. It includes a link to a Facebook group that members have found useful.