title: Solid-phase extraction and determination of ranitidine in human plasma by a high-performance liquid chromatographic method utilizing midbore chromatography.
abstract: An improved high-performance liquid chromatographic (HPLC) method utilizing solid-phase extraction (SPE) and midbore chromatography was developed for the determination of ranitidine in human plasma. A mobile phase of 20 mM K2HPO4-acetonitrile-triethylamine (87.9:12.0:0.1, v/v) pH 6.0 was used with a phenyl analytical column and ultraviolet detection (UV). The method demonstrated linearity from 25 to 1000 ng/ml in 500 microliters of plasma with a detection limit of 10 ng/ml. The method was utilized in a pharmacokinetic study evaluating the effects of pancreatico-biliary secretions on ranitidine absorption.
authors.affiliation: Division of Clinical Pharmacology and Hypertension, Medical College of Virginia, Virginia Commonwealth University, Richmond 23298-0160, USA.
authors.forename: D
authors.initials: D
authors.lastname: Farthing
authors.forename: K L
authors.initials: KL
authors.lastname: Brouwer
authors.forename: I
authors.initials: I
authors.lastname: Fakhry
authors.forename: D
authors.initials: D
authors.lastname: Sica
mesh_terms: D000897:Anti-Ulcer Agents / Q000097:blood* / Q000493:pharmacokinetics; D002851:Chromatography, High Pressure Liquid; D006635:Histamine H2 Antagonists / Q000097:blood* / Q000493:pharmacokinetics; D006801:Humans; D011899:Ranitidine / Q000097:blood* / Q000493:pharmacokinetics; D012680:Sensitivity and Specificity
chemical_list: D000897:Anti-Ulcer Agents; D006635:Histamine H2 Antagonists; D011899:Ranitidine