Abnormal Liver Enzymes: Causes, Symptoms, and Treatment
Medically reviewed by Achuta Uppu, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Abnormal Liver Enzymes?
A hepatologist (a doctor who treats liver disease) can find the cause and treat it. Your primary care doctor often orders the first blood tests. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What are abnormal liver enzymes?
Liver enzymes are proteins mainly made in your liver. Enzymes speed up certain chemical reactions in your body. Common ones are ALT (alanine transaminase), AST (aspartate aminotransferase), ALP (alkaline phosphatase), and GGT (gamma-glutamyl transferase).
Abnormal liver enzymes mean the levels in your blood are not in the usual range. High levels may be a sign of liver injury or disease. When liver cells are damaged, they release ALT into the blood. Some types of liver disease cause high ALT even before you have symptoms. Abnormal results do not always mean there is a liver problem. For example, high ALP can be a sign of bone disease or liver disease.
Symptoms
High liver enzymes are found with a blood test. You can have them before any symptoms appear. Symptoms point to liver damage or disease. They include:
- Nausea and vomiting.
- Lack of appetite.
- Fatigue and weakness.
- Jaundice, yellowing of the skin and eyes.
- Swelling or pain in the belly.
- Swelling in the ankles and legs.
- Dark urine and light-colored stool.
- Frequent itching.
Causes and who gets it
High ALT can be a sign of liver damage from many causes. These include hepatitis (swelling of the liver from infection or injury), infection, cirrhosis (scarring of the liver), and liver cancer. Alcohol-related hepatitis and fatty liver disease (a buildup of fat in the liver) can also harm the liver. Lack of blood flow to the liver can also raise levels. So can certain medicines, such as cholesterol or pain medicines, and poisons.
Your risk may be high if you have a family history of liver disease, alcohol use disorder, obesity, diabetes, hepatitis, or exposure to hepatitis. Many things can affect your results. These include age, sex, weight, medicines, dietary supplements, intense exercise, and the menstrual cycle.
How doctors diagnose it
Liver function tests (a liver panel) use a blood sample to measure substances made by your liver. They include albumin (a protein made in the liver), bilirubin (a waste product), and the enzymes ALP, ALT, AST, and GGT. ALT is found mainly in the liver, so it checks more specifically for liver damage. It is usually measured along with AST.
These tests alone usually cannot name the exact disease. If results are abnormal, you usually need other tests to find the cause. Your provider looks at the pattern of results, your symptoms, your history, and your medicines. If you have been ill recently, your provider may repeat the tests later.
Treatment
A high level does not always mean you have a condition that needs treatment. The tests can show if your liver is inflamed, how well it is working, and if medicines are harming it. Your provider can monitor liver disease over time and see how well treatment is working.
Your doctor first works to find the cause, because treatment depends on it. For fatty liver disease, doctors recommend gradual weight loss and regular physical activity. No medicines have been approved to treat fatty liver disease. Talk with your doctor before using supplements or herbal remedies, because some can damage the liver. If a medicine may be the cause, your doctor decides whether to change it.
Your provider will tell you how to prepare for the blood test. You may need to fast (not eat or drink) beforehand. If you need to fast or change medicines, follow your doctor's instructions. Do not stop taking any medicines unless your provider tells you to.
When to see a doctor
Call 911 or go to the emergency room if you vomit blood, faint, feel confused or very hard to wake up, or have severe belly pain. Call your doctor right away if your skin or eyes turn yellow. Dark urine or light-colored stool also needs prompt care. Belly swelling, or swelling in the ankles and legs, should be checked.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. This doctor can order a liver panel at a checkup and track your results over time. They can also help with weight, diabetes, or alcohol use, which all affect your risk.
Common questions
What does a high liver enzyme level mean?
It can be a sign of liver injury or disease. But a high level does not always mean you have a condition that needs treatment. Many things can affect your results, such as intense exercise or some supplements.
Can medicines raise liver enzyme levels?
Yes. Certain medicines, such as cholesterol or pain medicines, can cause liver damage and raise ALT. Tell your provider about everything you take. Do not stop any medicine unless your provider tells you to.
Do abnormal liver enzymes mean I have liver disease?
Not always. Abnormal results do not always mean there is a liver problem. High ALP can be a sign of bone disease or liver disease. Your provider looks at all the results, your history, and your medicines.
What is a liver function test?
It is a blood test that measures substances made by your liver, such as albumin, bilirubin, and the enzymes ALP, ALT, AST, and GGT. It shows how well your liver is working and whether it may be damaged.
Sources
- MedlinePlus - Liver Function Tests
- MedlinePlus - ALT Blood Test
- National Institute of Diabetes and Digestive and Kidney Diseases - Treatment for NAFLD & NASH
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
