Introduction: Piperacillin-tazobactam (PIP-TAZ) is a β-lactam and β-lactamase inhibitor combination, commonly used in children. As it is indicated for a variety of serious bacterial infections, achieving therapeutic PIP-TAZ concentrations at invasive infection sites, such as cerebrospinal fluid (CSF), peritoneal fluid, and pleural fluid is critical. Also, previous studies have highlighted the high inter-individual variability in […]