What is a normal range of liver enzymes for a 15 year old?

Normal liver enzyme levels can vary slightly based on the specific laboratory and testing methods, but typical reference ranges for a 15-year-old are approximately 7-56 U/L for alanine aminotransferase (ALT) and 8-48 U/L for aspartate aminotransferase (AST). Alkaline phosphatase (ALP) levels might range from 44-147 U/L, while gamma-glutamyl transferase (GGT) levels are generally around 9-48 U/L. It's important to consult a healthcare provider for interpretation of specific results and any concerns.