Wow that is very strange for him to have such a prolonged hypoglycemia--what a tricky little fellow! He received a half unit of the regular insulin at 3pm when his blood glucose was 328 yesterday, so it's kind of weird for his readings to be so low after that. When was he eating and how much was he eating? I certainly think that continued monitoring makes sense at this time. The other thing that I was considering is if we should be checking your glucometer against the glucometers that we use in the clinic that were designed for veterinary patients; however with the Libre and glucometer readings being pretty close my guess is that they are relatively accurate. Although theoretically the glargine takes longer to take maximal effect, I have definitely seen patients that absorb some amounts of glargine quite quickly so I would hesitate to give when he is under 100, but let's keep an eye on what his blood sugars are doing throughout the day and see what happens. Just to let you know, we did receive the results of the liver and splenic aspirates. His liver did have some changes that are consistent with a vacuolar hepatopathy, which is a nonspecific change in the liver cells that we often see in diabetics. There was a little bit of inflammation in his liver as well, so I do wonder if he has a chronic inflammatory condition affecting both his liver, GI tract, and pancreas, which is quite common in cats. In some cases we'll consider treating with steroid therapy or other immunosuppressives, but this is obviously less ideal in an unregulated diabetic patient as it has the potential to push them into DKA. It is also a little hard to determine on aspirates alone whether the inflammation truly is widespread or we just hit a pocket of inflammatory cells. His spleen samples did come back normal.