Causes& effects of pooping without urate?

[Sakai]

Hey guys, my boy Drogo has been pooping everyday, but for 4 days now he's been pooping without the urate. Here are some pics.

Some of them appears watery because he was previously dehydrated and ive beeen told by my vet to feed him 15ml of water a day. He was also on Hill's Prescription Diet (Restorative Care - Chicken) and antibiotics for a week as it was found out that he had lots of bacteria in his poop. And after that, i realized he started pooping without the urate. I wanted to bring him for his next check up but my vet hasnt reply yet (the only way to contact the vet is through email.) So while im still waiting for the reply, i was hoping if i could gain some ideas/insight on what could be the problem.
Thanks for all your time!

 

[CooperDragon]

My guess would be the kidneys aren't processing waste and producing the urate. I would offer extra water by dripping it on his nose to lick up to help kidney function. It looks like he's well hydrated though based on the extra water passing through with the poop. Since it hasn't been too long I wouldn't be alarmed yet but if it continues without urate then I might have the vet do a blood test to check kidney function.