What Does It Mean If My Dog’s Liver Enzymes Are High

High liver enzymes in dogs mean that certain values on a blood chemistry panel are above the laboratory’s reference range. They may indicate liver-cell irritation, changes in bile flow, medication effects, hormonal disease, or another condition affecting the body.



Elevated liver enzymes do not automatically mean your dog has liver failure. These values provide clues, but they must be interpreted alongside symptoms, examination findings, medication history, and other test results.

For families in Akron, Fairlawn, and Copley, Copley Fairlawn Veterinary Clinic can evaluate abnormal dog liver bloodwork and determine whether repeat testing, additional laboratory work, ultrasound, or ongoing monitoring may be appropriate.

What Are Liver Enzymes?   

Liver enzymes are substances measured during routine bloodwork. The two values owners most often hear about are ALT and ALP.

ALT is found mainly inside liver cells. When those cells become irritated or damaged, ALT may enter the bloodstream. An elevated ALT suggests liver-cell injury, but it does not identify the cause or show how well the liver is functioning.

ALP can increase when bile flow is affected or when the liver is stimulated by certain hormones or medications. It may also be higher in growing puppies because of normal bone development.

Other values, including AST, GGT, bilirubin, albumin, glucose, cholesterol, and bile acids, may help provide a fuller picture.

What Does Elevated ALT in Dogs Mean?  

Elevated ALT in dogs generally points to irritation or injury affecting liver cells. The increase may be mild, moderate, or substantial.

Possible causes include inflammation, infection, toxin exposure, reduced blood flow, medication effects, chronic hepatitis, or disease affecting nearby organs. Pancreatic, intestinal, or hormonal conditions may also contribute to liver changes.

The ALT level alone cannot show whether the problem is temporary or chronic. It also cannot confirm a specific diagnosis.



Your veterinarian will consider how high the value is, whether other results are abnormal, whether your dog has symptoms, and whether ALT has changed over time.

What Does Elevated ALP in Dogs Mean?  

Elevated ALP in dogs can occur with liver or gallbladder disease, reduced bile flow, hormonal conditions, medication use, or normal bone growth in young dogs.

Steroid medications and certain seizure medications can increase ALP. Dogs with conditions that raise natural steroid hormone levels may also develop significant elevations.

Because ALP can rise for several reasons, a high result does not always mean primary liver disease.

Medication history, age, symptoms, and the pattern of other bloodwork results all matter.

Can a Dog Have High Liver Enzymes Without Symptoms?  

Yes. Abnormal values are often discovered during routine screening before a dog shows visible illness.

Other dogs may have decreased appetite, vomiting, diarrhea, weight loss, increased thirst, increased urination, low energy, or abdominal discomfort. More concerning signs can include yellow gums or eyes, a swollen abdomen, unusual bleeding, disorientation, or seizures.



Call promptly if your dog develops yellow discoloration, repeated vomiting, collapse, severe weakness, confusion, or significant appetite loss.

What Testing May Be Recommended Next?  

The next step depends on how abnormal the values are, your dog’s symptoms, and whether other bloodwork results have changed.

Your veterinarian may recommend repeating the chemistry panel after a defined period to see whether the values improve, remain stable, or increase. A complete blood count, urinalysis, and additional liver-related testing may also be useful.

Our Onsite Diagnostics services support blood and urine testing when abnormal liver values need further evaluation.

Specialized testing may include bile acid measurements, clotting tests, infectious disease screening, or evaluation for hormonal disease. Not every dog needs every test.

When Is an Abdominal Ultrasound Helpful?  

An abdominal ultrasound allows the veterinary team to examine the liver, gallbladder, bile ducts, pancreas, and nearby abdominal structures.

Ultrasound may show changes in liver size or texture, gallbladder abnormalities, masses, nodules, fluid, or signs of disease affecting surrounding organs. It can also help determine whether additional sampling should be considered.

Our Ultrasound and Echocardiogram services include abdominal ultrasound for dogs whose examination or laboratory results suggest that imaging may provide useful information.

A normal ultrasound does not rule out every microscopic liver condition, but it can provide important structural information.

Could Medication Be Causing the Increase?  

Yes. Some prescription medications and supplements can influence liver enzyme activity.

Tell your veterinarian about every medication, supplement, chew, topical product, and over-the-counter item your dog receives. Do not stop a prescribed medication without veterinary guidance.



Your veterinarian may recommend continued monitoring, a dosage review, an alternative medication, or additional testing based on why the medication is being used and how the liver values are changing.

How Are High Liver Enzymes Treated?  

There is no single treatment for high liver enzymes because the bloodwork result is not a diagnosis.

Treatment may involve addressing an infection, changing a medication, managing hormonal disease, treating gallbladder or pancreatic disease, modifying nutrition, or monitoring a stable mild elevation.

Dogs with chronic liver or metabolic conditions may need repeat bloodwork, medication adjustments, imaging, and ongoing follow-up.

Our Chronic Disease Management services support dogs who require continued monitoring and treatment based on their diagnosis and response to care.

Frequently Asked Questions