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Clinical Trial
Journal Article
Validation Studies
Validated HPLC method for the determination of ranitidine in plasma.
Die Pharmazie 2003 October
A validated HPLC method for the determination of ranitidine in human plasma is presented. Sulfanilamide as internal standard (IS) was used. Plasma samples were purified by solid phase extraction (SPE) using a copolymeric [poly(divinyl-benzene-co-N-vinylpyrrolidone)] column ("Oasis Waters"). Mobile phase consisting of dibasic potasium phosphate 0.08 M/acetonitrile/methanol/triethylamine 0.05% (89.5:3:7:0.05) pH5 was used at a flow rate of 0.9 ml/min on a C18 column (Nova-Pack, 3,9 x 300 mm, Waters). The eluate was monitored using an UVNis detector set at 300 nm. Ratio of peak area of ranitidine to sulfanilamide was used for the quantitation of plasma samples. FDA criteria for bioanalytical validation was used to validate the method. Linearity was assessed between 100-1600 ng/ml, the limit of quantitation was 100 ng/ml and recovery was greater than 94%. Accuracy, precision and selectivity met the current recommendations for bioanalytical method validation. The method was successfully used in a bioavailability study of a ranitidine tablet in healthy volunteers.
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