Thanks so much for the replies everyone.

Lori - thank you for all of your information, and the offer to help. I can't tell you how appreciative I am. I'm sure I will have some questions, I just can't get it together right now. My head is spinning with all the reading I have done today, and I can't seem to really focus very well. But I wanted to answer your question about whether Jasper had a UPC done. Is this a urine protein:creatinine ratio? If so, yes, he has had this test done twice. I had posted them a while back. The results are as follows:

10/22/12:

Protein, Random Urine 138.9 mg/dL (no reference range given)
Creatinine, Random Urine 110 mg/dL (no reference range given)
Protein/Creat Ratio 1.27 (no reference range given)

1/14/13:

Protein, Random Urine 73.3 mg/dL (no reference range given)
Creatinine, Random Urine 21 mg/dL (no reference range given)
Protein/Creat Ratio 3.57 (no reference range given)

The increase in the ratio from 1/14 is what made my vet say that we needed to start treatment now, she said it was a pretty significant elevation in that value and indicated that he is losing a lot more protein from his kidneys.

I went to the site you gave and read all the diet information. I am a bit anxious about that now, because the Hills k/d is the food my vet has me switching Jasper over to. She also mentioned Purina and Royal Canin kidney diets as possibilities also. She said she didn't have a preference. I brought a sample of the k/d home to see if he liked it. It seemed ok so figured we would go with that. Should I ask my vet about it? I don't know what else she would prescribe. The k/d does have a bit higher protein content than the Purina. I couldn't access the nutritional info on the Royal Canin website.

As far as the yahoo group, I did join and complete my registration. I am going to need to tackle that another time, they have a lot of questions and lab results that they request for the first post. And I need to figure out how their site works when I am not so over loaded. I am glad to know it is a good site to join.

Thank you again for the help.

Hugs,
Tina and Jasper