Table 1.

Relative activity of transaminases in human tissues.^*

	AST Activity	ALT Activity	AST/ALT Ratio	Weight (kg)	AST Total	ALT Total
Liver	7,100	2,850	2.5	1.5	10,650	4,275
Kidney	4,500	1,200	3.8	0.25	1,125	300
Heart	7,800	450	17	0.3	2,340	135
Muscle	5,000	300	17	30	150,000	9,000
Serum	1	1	1.0	3	3	3

^*Adapted from King J. Practical Clinical Enzymology, 1965.³