Some of these organisms are not able to be treated at reasonable cost, without risking toxicity. In every case, take precautions not to have this organism contaminate your hospital environment and advise the owner to avoid contact with the dog's urine. The rest of the urinalysis is normal. Therefore, this dog's urinalysis is abnormal, but it is difficult to judge the severity of the problem, since the dipstick reading is subjective. Any type of urine sample is acceptable, although I prefer a voided sample when the only problem is proteinuria, as this avoids the iatrogenic hemorrhage that may be associated with cystocentesis.
Some proteinurias are transient.
A urine culture is negative. The dog's prostate gland seems to be getting bigger, although it is symmetric and non-painful. Prostatic fluid enters the proximal urethra and refluxes back into the bladder. So prostatic hemorrhage can result in hematuria, without causing any other signs. The most likely rule outs in this age dog would be prostatic hyperplasia and chronic prostatitis as prostatic neoplasia is usually seen in older animals.