Liver function tests consist of ALP, ALT, AST, and bilirubin. The normal range for ALP (alkaline phosphatase) is 25-100 U/L. The normal range for ALT (alanine aminotransferase) is 7-56 U/L. The normal range for AST (aspartate aminotransferase) is 10-40 U/L. The normal range for total bilirubin (unconjugated and conjugated) is 0.2-1.2 mg/dL, with the breakdown being conjugated bilirubin normally between 0.1-0.4 mg/dL and unconjugated bilirubin between 0-1.1 mg/dL.