He doesn't feel underweight, but i can tell there is less plump to him than a few weeks ago. I don't think they did a urine analysis, but they did xray and full blood workup. Both came back totally normal including his crea and urea. Basically the blood test indicated he isn't fighting anything since his white blood cells were normal and not elevated and his internal organs seem to be working fine.
He is being more active since Monday when he was pretty lethargic. I don't where he is getting the energy, but i guess his nibbling habit are keeping him sustained. He is definitely drinking plenty of water to keep hydrated, but he still has nasty room clearing gas when he urinates and he got this gas as soon as he got his current ailment. He only passes the gas when he goes pee or poop though.