title: Stepwise binary gradient high-performance liquid chromatographic system for routine drug monitoring.
abstract: Drug therapy is usually optimized by concentration measurement in patient serum. High-performance liquid chromatography (HPLC) is one of the most important analytical techniques used for therapeutic drug monitoring (TDM) of drugs for which no immunoassay kits are available. HPLC has been frequently used for screening purposes in toxicology, too. The Merck Tox Screening System (MTSS) has been developed for the identification of substances by a combination of gradient HPLC with diode-array detection and identification with a database system. For routine TDM an isocratic HPLC system is more suitable because of shorter analysis time, better reproducibility of retention index and better precision of results. Therefore we defined a set of methods in steps of 10% of the two MTSS eluents. Three examples are shown: Amiodarone, Indometacine and Thiopental. New applications to test for other substances can be transferred to an isocratic system after a complete MTSS gradient run.
authors.affiliation: Institut für Klinische Chemie, Klinikum, Mannheim, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Hannak
authors.forename: F
authors.initials: F
authors.lastname: Scharbert
authors.forename: R
authors.initials: R
authors.lastname: Kattermann
mesh_terms: D000638:Amiodarone / Q000097:blood; D011232:Chemical Precipitation; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D016903:Drug Monitoring / Q000379:methods*; D006801:Humans; D007213:Indomethacin / Q000097:blood; D009966:Orphenadrine / Q000097:blood; D011395:Promazine / Q000097:blood; D011786:Quality Control; D012680:Sensitivity and Specificity; D013874:Thiopental / Q000031:analogs & derivatives / Q000097:blood
chemical_list: C004316:thiobutabarbital; D009966:Orphenadrine; D013874:Thiopental; D000638:Amiodarone; D011395:Promazine; D007213:Indomethacin