Next Wednesday so he can get an ultrasound and X-ray of his bladder and he may have to get a GA if they need to put a catheter in 
Does anyone know what he will be like when he comes home?
Also he's getting it done as he dribbles/pees and doesn't realise he's doing it, he's had a weeks worth of anti bs and a urine sample which showed his urine was a bit diluted but vet wasn't concerned, but (touch wood) he's not dribbled in 3 nights, should I still put him through this?