Alanine Transaminase (ALT) - Cleveland Clinic
Alanine transaminase (ALT) is an enzyme that’s mainly found in your liver. High levels of ALT in your blood may indicate damage or injury to your liver.
High ALT Blood Test Levels: Causes, Symptoms and When to Worry
Jan 13, 2025 · The possible causes of high ALT levels in the body include liver disease, alcoholism, obesity, muscle damage, heart failure, and more. Learn about symptoms and ways to lower high ALT …
Why Are My Liver Enzymes High and What Should I Do Next?
Jul 9, 2025 · What are the most common reasons my ALT or AST go up? About 1 in 10 routine blood tests show mildly elevated liver enzymes. The vast majority trace back to four causes: fatty liver …
What happens when your liver enzymes are high?
Feb 14, 2023 · Discover what happens when your liver enzymes are high and what elevated liver enzymes mean. Learn about the causes and implications of elevated liver enzymes, and explore the …
What Is an Alanine Aminotransferase (ALT) Test? - WebMD
Jan 29, 2025 · Your body uses ALT to break down food into energy. Normally, ALT levels in the blood are low. If your liver is damaged, it will release more ALT into your blood and levels will rise.
ALT Blood Test: MedlinePlus Medical Test
An ALT blood test checks the health of your liver. ALT is a liver enzyme that gets released into your blood when liver cells are damaged. Learn more.
Alanine Aminotransferase (ALT): Levels, Testing, and More
Sep 28, 2025 · Alanine aminotransferase (ALT), an enzyme mainly found in your liver, can signal liver health when levels are high. You can get an ALT blood test to catch early signs of liver disease or...
ALT Blood Test: High Levels and What Do They Mean? - Healthline
Apr 26, 2024 · A liver enzyme known as ALT plays an important role in breaking down proteins in the digestive process. High levels of ALT in the blood can indicate liver issues.
How to approach elevated liver enzymes? | AASLD
The degree of AST/ALT elevation can guide management. Your initial workup should include CBC, AST/ALT, ALP, bilirubin, PT/INR, a hepatitis panel, iron studies, and an abdominal ultrasound.
When to worry about ALT levels? | SiPhox Health
Jul 23, 2025 · Learn when elevated ALT levels signal liver problems, what causes high ALT, symptoms to watch for, and how to test and lower your levels naturally.