Alkaline phosphatase is markedly elevated. Which additional enzyme elevation supports a hepatobiliary rather than bone source?
1Creatine kinase MB
2Gamma-glutamyl transferase✓ 정답
3Amylase
4Acid phosphatase only
해설
GGT commonly rises in hepatobiliary disease and can help support a hepatic source of elevated alkaline phosphatase because it is not increased by bone disease in the same way.