- Total bilirubin <1.5 time the upper-normal limits (UNL) of the Institutional normal values, AST (SGOT) and ALT (SGPT) < 2.5 x UNL, or <5 x UNL in case of liver metastases, alkaline phosphatase <2.5 x UNL, < 5 x UNL in case of liver metastases, <10 x UNL in case of bone metastases.