Biochemistry

Enzyme	Clinical Use	Indicates
ALT (SGPT)	Specific to liver injury	Hepatitis, liver necrosis
AST (SGOT)	Found in liver, heart, muscle	Liver disease, myocardial infarction
ALP	Bile duct obstruction, bone disease	Cholestasis, bone metastases
GGT	Alcoholic liver disease, biliary obstruction	Alcohol abuse, hepatobiliary disease
LDH	Non-specific, elevated in many conditions	Liver, cardiac, or hemolytic disorders