- Serum glutamic oxaloacetic transaminase (SGOT) (aspartate aminotransferase [AST]) and serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase [ALT]) =< 2.5 x ULN or SGOT (AST) and SGPT (ALT) =< 5 x ULN if elevations are due to liver metastases