- Abnormal screening blood test : leukocyte count less than 3.5 × 109 cells/L, neutrophil count less than 2 × 109 cells/L, hemoglobin level less than 85 g/L, platelet count less than 100 × 109 cells/L, or hepatic aminotransferase or alkaline phosphatase levels greater than 3 times the upper limit of normal