My 7 month old English bull dog has had ammonium urates which caused blood in his urine my vet did alsorts of tests to determine this. My vet said to put him on hills I/d sensitive and that seems to have worked as there is no blood anymore. My vets are now saying I need to take a weekly sample down to the vets and my dog needs an ultra sound every 4 weeks. Is this right, or should you be able to tell from urine samples if everything is ok, also does this mean that my dog has huu . Please help !!