GPT and primary biliary cholangitis: At the time of PBC diagnosis, her liver enzyme levels were alkaline phosphatase (ALP): 449 IU/L, gamma-glutamyl transferase (GGT): 680 IU/L, aspartate aminotransferase (AST): 54 IU/L, and alanine transaminase (ALT): 133 IU/L.