Determination of celecoxib in human plasma and breast milk by high-performance liquid chromatographic assay
Mei Zhang1, Grant A Moore, Sharon J Gardiner
1Clinical Pharmacology, Department of Medicine, Christchurch School of Medicine and Health Sciences, University of Otago, Christchurch, New Zealand. mei.zhang@cdhb.govt.nz
Abstract:
A rapid and simple HPLC assay was developed for the determination of celecoxib in human plasma and breast milk. After proteins were precipitated with acetonitrile, celecoxib was resolved on a C18 column and detected by UV detection at 254 nm. Standard curves were linear over the concentration range 10-2000 microg/L (r(2)>0.99). Bias was =+/-15% from 20 to 2000 microg/L in both matrices, intra- and inter-day coefficients of variation (imprecision) were <10%, and the limit of quantification was 10 microg/L.

