Comparison of gentamicin blood levels from previous regimen with those from Medicines for Children regimen
| Regimen | No of infants | High peaks (%) | Low peaks (%) | High troughs (%) |
| Previous (term) | 35 | 0 | 11 (31) | 7 (20) |
| MFC (term) | 31 | 3 (9.7) | 0 | 17 (55) |
| Previous (preterm) | 21 | 0 | 10 (47) | 0 |
| MFC (preterm) | 18 | 5 (28) | 0 | 7 (39) |