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My dog's urine has blood and protein, but no infection. What's wrong?

Updated On September 23rd, 2025

Pet's info: Dog | Border Collie | Male | unneutered | 7 years and 7 months old | 45 lbs

Hi, canine urinalysis shows no crystals, no bacteria, no wbc in sample. Sample positive for blood +3 and protein +2. RBC 20-30/HPF. Any suggestions on diagnosis? Vet does not know.

1 Answer

Most Helpful Answer

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Answered By Jenny, DVM

Veterinarian

Published on December 25th, 2017

With protein and blood present without an infection you will need more testing to be sure. An X-ray and ultrasound would be beneficial since a concern at this point would be bladder stones or bladder cancer. Both will show up on an ultrasound to determine what the next steps may be. The ultrasound will also check his prostate he is not neutered as this can affect the urine also

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