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Estimated concentrations of GM in different batches of amoxicillin, amoxicillin-clavunate, and piperacillin-tazobactam delivered at Saint-Louis Hospital between November 2003 and May 2004
| β-Lactam antibiotic or other constituent | No. of batches | Mean (SD) concn (ng/ml) of GM | Median concn (ng/ml) of GM | Range (ng/ml) |
|---|---|---|---|---|
| Amoxicillin | 10 | 840 (1,297) | 640 | 8-4,320 |
| Amoxicillin-clavulanic acid | 10 | 376 (1,106) | 13.6 | 2-3,500 |
| Piperacillin-tazobactam | 10 | 44 (51) | 24.8 | 0.4-141 |
| Diluents | 0.00 | 0.00 |
