Why Is My Dog Or Cat’s Urine Bilirubin Level High?

Ron Hines DVM PhD

To see what normal blood and urine values are for your pet, go here

For an explanation of causes of most abnormal blood and urine tests go here

To see how tests are often grouped, go here 

If the excess bilirubin was found in your pets blood, go  here

Bilirubin In Your Pet’s Urine = Bilirubinuria

Also read similar topics: Jaundice, Bilirubin,  Urobilinogen , Icterus Index 

It is not abnormal to find slight amounts of bilirubin in the urine of healthy dogs. When it is there in larger amounts, it can be due to all the causes I listed for increases in direct (conjugated or soluble ) bilirubin in your pet’s blood stream. (ref) Of the two types of bilirubin, direct bilirubin is the only kind that makes it into your pet’s urine.

Healthy cats do not normally pass any bilirubin in their urine. When it is detected there, the causes I listed for increased blood direct bilirubin need to be explored.

Any dog or cat that is jaundiced will have increased amounts of bilirubin in its urine as well as its blood.


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