This study compares cyclosporin A (CsA) concentrations in plasma from patients receiving various transplants, as measured by HPLC and RIA with a monoclonal antibody for CsA and an 125I-labeled ligand. The RIA was restandardized with in-house standards because it overestimated CsA by an average of 23%. The RIA was sensitive to 2 micrograms/L, the standard curve was linear from 20 to 500 microgra...

a sensitive and rapid method is described for determination of clopidogrel carboxylic acid (cca), the inactive metabolite of the antiplatelet agent clopidogrel in human serum. the analytical procedure involves liquid-liquid extraction of the analyte and an internal standard (phenytoin) with ethyl acetate. a mobile phase consisting of 0.05 m phosphate buffer containing triethylamine (0.5 ml/l; p...

ezetimide belongs to a class of lipid lowering compounds that selectively inhibits intestinal absorption of cholesterol and related phytosterols. the purpose of this study is to establish a reliable and quick method for the assignment of ezetimibe in tablets form by high performance liquid chromatography with ultraviolet detection (hplc-uv). a rapid and sensitive hplc method has been developed ...

tolterodine tartrate, is a new, potent and competitive muscarinic receptor antagonist in clinical development for the treatment of urge incontinence and other symptoms of unstable bladder. the purpose of this study is to establish a reliable and quick method for the assignment of tolterodine tartrate by high performance liquid chromatography with ultraviolet detection (hplc-uv). a rapid and sen...

background: in iran, maize is cultivated in wide areas including northern provinces. it is one of the most important crops for poultry and livestock feeding, which is susceptible to aflatoxins (afs) contamination. so, pre-harvest maize samples from mazandaran province, north of iran were analyzed for afs contamination. objective:   methods: thirty-five pre-harvest maize samples were analyzed us...