- Aspartate aminotransferase (AST) (Serum Glutamic Oxaloacetic Transaminase, SGOT) /Alanine aminotransferase (ALT) (Serum Glutamic Pyruvate Transaminase, SGPT) ] ≤ 2.5 x institutional upper limit of normal unless liver metastases are present in which case they must be ≤ 5 x ULN