What Liver Enzymes Do and What Levels Are Normal
Dec 2, 2025 · An AST/ALT ratio of less than 1 (where the ALT is higher than the AST) is a general indication of fatty liver disease. An AST/ALT ratio equal to 1 (where the ALT is equal to the AST) may …
Liver function tests - Mayo Clinic
Jan 18, 2025 · AST is an enzyme that helps the body break down amino acids. Like ALT, AST is usually present in blood at low levels. An increase in AST levels may mean liver damage, liver disease or …
Interpretation of Liver Function Tests (LFTs) - Geeky Medics
Mar 24, 2018 · Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) are enzymes found within liver cells at high concentrations. Raised ALT / AST levels in the blood occur in …
What Is The Difference Between Ast And Alt Liver Enzymes
Jun 2, 2024 · Mildly elevated ALT and AST levels can be caused by nonalcoholic fatty liver disease (NAFLD) and alcoholic liver disease. ALT is a more specific indicator of liver inflammation than AST, …
How to approach elevated liver enzymes? | AASLD
ALT is more specific to liver injury because of its greatest concentration in the liver, while AST can also be found in extrahepatic organs, including brain, heart, and skeletal muscle.
Why Are My ALT and AST High on a Liver Function Test?
Aug 4, 2025 · An ALT above 35 U/L in women or 45 U/L in men, and an AST above 40 U/L, signal liver-cell irritation. The most common culprits are non-alcoholic fatty liver disease, viral hepatitis, alcohol, …
Liver Function Test Normal Range: ALT, AST, ALP, Bilirubin Explained
Feb 5, 2026 · Learn the normal range of liver function tests (LFTs), including ALT, AST, ALP, bilirubin, and albumin.
AST/ALT Ratio Chart: What the Numbers Indicate
Jul 25, 2025 · A typical AST/ALT ratio in healthy individuals is around 0.7 to 1.2, meaning ALT levels are slightly higher or similar to AST levels. Most liver cell injuries show a greater increase in ALT than AST.
AST/ALT ratio - Wikipedia
The AST/ALT ratio or De Ritis ratio is the ratio between the concentrations of two enzymes, aspartate transaminase (AST) and alanine transaminase, aka alanine aminotransferase (ALT), in the blood of …
What are AST and ALT in a blood test? | SiPhox Health
Jul 25, 2025 · Learn what AST and ALT liver enzymes mean in blood tests, their normal ranges, causes of elevation, and how to improve liver health naturally.