title: High-pressure liquid chromatographic assays for ticarcillin in serum and urine.
abstract: Rapid and sensitive high-pressure liquid chromatographic (HPLC) assays for ticarcillin in serum and urine have been developed. Sample pretreatment and optimized chromatographic conditions are presented for a C-18-bonded reversed-phase column used in an internal standard assay method. Ticarcillin has a retention time of or approximately 5.3 min at a flow rate of 1.5 ml/min for a mobile phase of acetonitrile-aqueous 0.06 M sodium biphosphate, pH 2.05, (50.5:100). In a two-step extraction procedure, the ticarcillin extraction efficiencies from serum and urine were 76.1 +/- 4.7 and 80.9 +/- 3.2% respectively. The assay sensitivity limit for ticarcillin in these fluids is approximately 1.0 microgram/ml. A comparison is made of the HPLC and microbiological assay results for ticarcillin in 20 different but equally divided serum samples obtained from two volunteers.
mesh_terms: D001419:Bacteria / Q000187:drug effects; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010406:Penicillins / Q000032:analysis*; D013982:Ticarcillin / Q000032:analysis* / Q000097:blood / Q000652:urine
chemical_list: D010406:Penicillins; D013982:Ticarcillin