The normal range for AST (Aspartate aminotransferase) and ALT (Alanine aminotransferase) can vary slightly depending on the laboratory and reference range used. In general, the normal range for AST is around 10 to 40 units per liter (U/L), while for ALT, it is approximately 7 to 45 U/L. However, it's important to note that the specific reference ranges may differ, and the interpretation should consider other factors, such as the individual's medical history, presence of symptoms, and additional diagnostic tests. Consulting with a healthcare professional is crucial for accurate evaluation and interpretation of AST and ALT levels based on the reference range used by the specific laboratory and the individual's health condition.