Based only on that information (there's more involved) I would probably suspect stones or that they are likely to occur. How high the PH is also matters. :-) What does your vet think about the situation and results as a whole? Here's some information for you.
www.vetinfo.com
www.vet.uga.edu
www.macatawa.org
www.vetinfo.com
www.vet.uga.edu
www.macatawa.org