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Published on: April 13, 2010
Development of an HPLC-MS/MS method for the determination of ceftolozane/tazobactam in bronchoalveolar lavage fluid
Christina A Sutherland1,1, Can Ozbal2,2, David P Nicolau1,3,1,3
1Center for Anti-Infective Research & Development Hartford Hospital, Hartford, CT, 06102 USA.
Aim:
We describe the validation of an HPLC-MS/MS method to analyze ceftolozane and tazobactam simultaneously in saline matrixes.
Materials & Methods:
An Agilent 1260 HPLC interfaced to an Agilent 6470 triple-quadrupole mass spectrometer was used for quantification. A reverse-phase column running a gradient of water and acetonitrile containing 0.1% formic acid mobile phase at a flow rate of 1.0 ml/min provided chromatographic fractionation. Tazobactam15N3 was used as the internal standard. The standard curves were linear over a range of 0.02-0.5 μg/ml.
Conclusion:
This methodology represents a simple, reproducible approach to the determination of drug concentrations with accuracy and precision for pharmacokinetic studies undertaken with this recently US FDA-approved antimicrobial therapy.
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