title: High-performance liquid chromatographic determination of pilocarpine in plasma.
abstract: A high-performance liquid chromatographic procedure requiring neither derivatization nor complex sample work-up is reported for reproducibly and sensitively determining pilocarpine in plasma. Following stabilization of pilocarpine against in vitro hydrolysis using sodium fluoride, plasma samples were extracted and the extracts chromatographed on a 5-microns, low-carbon-load (6%) C18 reversed-phase column. The assay was linear between 10 and 300 ng/ml (r = 0.998). It had sufficient sensitivity to quantitate pilocarpine at concentrations as low as 10 ng/ml (signal-to-noise ratio > or = 4) using a 500-microliters sample. The assay appears to be the first published specifically for plasma determinations and has proven capable of supporting pharmacokinetics studies of pilocarpine disposition in the anesthetized dog.
authors.affiliation: Pharmacokinetics Laboratory, University of Connecticut, Storrs 06268.
authors.forename: M L
authors.initials: ML
authors.lastname: Weaver
authors.forename: J M
authors.initials: JM
authors.lastname: Tanzer
authors.forename: P A
authors.initials: PA
authors.lastname: Kramer
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004285:Dogs; D006801:Humans; D010862:Pilocarpine / Q000097:blood* / Q000493:pharmacokinetics; D015203:Reproducibility of Results
chemical_list: D010862:Pilocarpine