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Hi, Welcome to Just Answer. I'm Chris, a small animal Vet based in the UK. I am reviewing your question and will get back to you as soon as possible
Sorry to hear of this issue with your dog. Could you attach the latest blood results for him and I will have a look for you?
To interpret these results we need a result for both his urea and creatinine in addition to the SDMA. We also need a phosphate level and a urine sample analysis as a minimum.
Thanks for the further information.
We can see that SDMA and urea are both elevated. Creatinine is within the nornal range for the lab, but a level of over 120 in a dog is consistent with renal disease. In dogs with low muscle mass, creatinine often does not elevate as high as we might expect.
We do not have a result for his phosphate, this is important to monitor his response to phosphate binder therapy.
We also need a urine analysis to confirm kidney disease and to check for protein levels to monitor his response to treatment with benazepril (we need to see if benazepril is lowering the protein levels in his urine from pre treatment levels.
The results are consistent with kidney disease but a urine analysis is vital if not recently performed.
I hope that answers your question? Please let me know if you need any further help or advice.
There can be some fluctuation in the SDMA, so it is not necessarily a prognostic indicator.
Have we had a recent urine sample analysis?
OK. I would definitely recommend getting a urine sample rechecked including a urine protein to creatinine ratio to see if the benazepril is reducing protein loss in urine.
Urea can come from other sources, such as digestion of blood in the gastrointestinal tract in the case of gastrointestinal bleeding. I notice that Eddie is quite anaemic - not something we would expect from stage 1 or 2 renal disease. I would want to check that this blood is not being lost in his urine or faeces.
OK. It may be worth considering a Faecal occult blood test as chronic gastrointestinal bleeding can sometimes not be readily apparent. It is good that he has a good appetite.
You're welcome. Please feel free to keep me updated.