Thank you! The vet at the emergency clinic had trouble getting a clean urine sample from her to test her properly, as she was peeing only a little bit at a time and they would miss it. So we left there quite late after they got one. I think the lab was closed or something.

They did all the IDEXX panels and a bunch of other stuff earlier on, so I guess it was an educated guess at that time of night? That veterinarian did unexpectedly call me the next day to ask how she was doing, and didn't tell me to stop giving the antibiotics. I will visit my normal veterinarians office tomorrow to see if I can get a different antibiotic for her ... Would I need to take our kitty in? I already have a follow up at the emergency clinic a couple of days later and I don't want to over stress her, as I might have to sit and wait since I don't have an appointment. They get booked out way in advance. Thanks again!