My 8 yr old cat was jsut diagnosed with CRF. His BUN level is 135!! Normal is 30. He has been on IV fluids for several days and they are going to redo his labwork soon. I know some cats can manage with SubQ fluids and special diet but my question is has anyone gone thru this with a cat with such high BUN levels??? Does he have a fighting chance? I will do whatever it takes to help him.