Cameron was at 162 for his PMPS tonight. I couldn't delay and test again, because he was frantic for food (had been at the vets for a couple hours), and so was our other cat, so I took a chance and did 0.25u. My thinking was that I'll be home & awake to test/monitor tonight, and the last time he had a low PS, I skipped the shot and at +3 he was high again. I'm honestly surprised he wasn't high from the vet stress! (Pre-dental checkup at a new vet). Is my thinking/reasoning sound-ish?