By urates do you mean the white solids or liquids?
My bp just went on a three day pee marathon that had me changing paper nightly - some solids, but mostly liquid. I was mildly concerned but she does drink quite frequently. (Unless that could be another symptom maybe) She eats like a champ every seven days. I try to keep 50-60% humidity.
I guess you could say she was a rescue and wasn't receiving the best of care so I'm hoping maybe her system is just readjusting itself. Still if it's a far cry from 1 to 3 weeks.
Still, kid, mine whizzes a lot too. Not sure if that's normal but you're not alone. I'd be interested to hear if you find something wrong that I may wish to check. (If anything is indeed wrong in the first place)