Bilirubin In Urine Dog. Dogs with elevated levels of Bilirubin may be checked for liver disease or other conditions related to his liver function. Bilirubin is not found in the urine of healthy cats but may be found in small quantities in the urine of healthy dogs. The extent of contamination from the vagina and vulva in normal female dogs is much less but can become clinically impor - tant during estrus. Bilirubinuria bilirubin in urine is an abnormal finding and indicative that red blood cells in your pets blood stream are being destroyed at a higher rate than normal.
Bilirubin appears in the urine if there is an increase in the serum concentration. Excessive bilirubinuria in a dog or any bilirubinuria in a cat is an indication to evaluate serum bilirubin concentrations. It can be found in pets with liver disease and autoimmune diseases. Bilirubinuria is an indicator of conjugated bilirubin in the urine. Bilirubin is not present in the urine of most domestic animals except the dog. The way bilirubin is formed in the body is by metabolism of dead red blood cells RBCs this is a normal process.
A 3 bilirubinuria is not expected in dog urine regardless of how concentrated it is.
In clinically normal dogs especially male dogs with high urine specific gravity a small amount of bilirubin is typically present in the urine. Bilirubin appears in the urine if there is an increase in the serum concentration. In normal male dogs contamination of voided urine samples with cells pro - tein and bacteria commonly occurs as urine passes through preputial exudate. In dogs with concentrated urine a small amount of bilirubin can be normal. Renal threshold low small amounts may be present in urine of normal dogs especially male dogs. The extent of contamination from the vagina and vulva in normal female dogs is much less but can become clinically impor - tant during estrus.