- Screening laboratory values outside the following limits: 1) hematocrit below 28%, 2) WBC <3,000 or over 13,500 per ul, 3) platelets below 125,000 or above 500,000 per ul, 4) creatinine above 2.8 mg/dl or BUN above 75 mg/dl, and 5) AST/SGOT or ALT/SGPT over 110 U/L, Alkaline phosphatase over 200 IU/I or a bilirubin over 2.8 mg/dl.