- SGOT <2.5 X upper limit of normal; or <5 X upper limit of normal if evidence of liver metastases; Alkaline phosphatase < 2.5 X upper limit of normal; or < 5 X upper limit of normal if evidence of liver metastases; Total bilirubin < 1.5 X upper limit of normal; Creatinine clearance > 50 cc/min (by Cockroft - Gault or as determined from a 24-hour urine collection).