Patient characteristics
A total of 87 busulfan measurements in 54 patients were included. The patient characteristics are shown in Table 1. There were 45, 87, 75, 84, and 82 blood samples at 1, 2, 3, 4, and 6 h from the start of busulfan infusion, respectively. The median actual AUC0–∞ was 773 (range, 331–1631) μmol•min/L.