@lvoss:
Actually, if Willie is spilling proteins he may have fanconi. Fanconi dogs spill all sorts of nutrients in their urine but sugar has been the easiest for us to test for since there are urine test strips for it. What were Willie's symptoms that led to testing his urine and finding the protein?
They are at the beginning of this post… typical excessive peeing and drinking...
And you are right, I had forgotten about that.... but I know that usually Dr. Gonto will look for the sugar... but hey best to rule out everything.. I think if he were mine, I would go off to get blood gases...