Petco Text Logo
Petco Pet Logo

My dog's BUN is high. What does elevated blood urea nitrogen mean?

Updated On September 23rd, 2025

Pet's info: Dog | Labrador Retriever | Female | unspayed | 30 lbs

My pet dog lab 9years was not eating properly so doctor adviced a blood check up and in that in kidney section" serum blood urea nitrogen" is 127.8 whereas normal range says as 7-27...please advise what exactly the prolem is

2 Answers

Most Helpful Answer

Image profile

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on April 6th, 2017

Oh I'm sorry that value showed up on Annie's blood work. The blood urea nitrogen (BUN) is a waste product produced by the liver from proteins from the diet, and is eliminated from the body by the kidneys. When it is increased, that is a sign of kidney disease. Hers is quite elevated, and I would discuss with the vet treatment options if they feel she has kidney disease.

Vote icon

1Pet Parents found this answer helpful

Other Answers

  • Image profile

    Answered By Joy Fuhrman, DVM, MBA, CPA

    Veterinarian

    Published on

    Elevated BUN can be due to kidney disease (reduced eliminated) or increased production which can sometimes be due to a GI bleed. Your veterinarian will be able to determine the underlying cause of Annie's elevated BUN.

    Vote icon

    0Pet Parents found this answer helpful

See More Answers
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored