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What causes slightly elevated liver enzymes and bilirubin in my cat?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 9.3 lbs

This is Bits’ blood work...she had a couple high normal values and some low normal. I was told that this was nothing to be concerned about. What are some things that could cause slightly elevated levels like this?

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Answered By Tomasz Wnuk

Veterinarian

Published on April 14th, 2021

Hello and thank you for contacting Petco Pet Education Center, formerly Petcoach. The two significant findings on the bloods are - mild elevation in ALT, which is one of the liver enzymes - elevation in TBIL (which means that Bits is mildly jaundiced) The most common cause of these abnormalities is liver / gall bladder / bile ducts infection. Also, it is not uncommon to find this results in cats that suffer from pancreatitis (pancreas was not tested on the blood work you posted). The next step of investigation would be an ultrasound scan of the liver, pancreas and gall bladder. However, if Bits is not clinically ill (if she does not have temperature, is not vomiting and has normal appetite) your vet may decide to treat her with a course of antibiotics and then run the bloods again. Good luck

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