title: Ultrasensitive and automated 1 pg/ml fluticasone propionate assay in human plasma using LC-MS/MS.
abstract: BACKGROUND
  To develop and validate an ultrasensitive bioanalytical assay for quantitation of fluticasone propionate in human plasma, aliquots of 0.6 ml of K(3)EDTA human plasma were treated with zinc sulfate solution and loaded onto a preconditioned SPE plate. The sample solutions were washed, eluted, dried and reconstituted. The extracted sample was injected onto a LC-MS/MS system and separated by a reverse-phase HPLC column with a 5 min gradient program, and detected by MS/MS for fluticasone propionate quantitation.
  
  
  RESULTS
  Linearity was from 1 to 200 pg/ml. The intra- and inter-day accuracy and precision of the assay met validation acceptance criteria. Various stabilities were established and interference drug assessment was evaluated. The assay has been used for clinical studies.
  
  
  CONCLUSIONS
  This ultrasensitive method has been successfully validated using LC-MS/MS for determination of fluticasone propionate in human plasma at low pg/ml level.
authors: Bioanalytical Services, XenoBiotic Laboratories, 107 Morgan Lane, Plainsboro, NJ 08536, USA. allenajiji@yahoo.com
authors: Allena J
authors: AJ
authors: Ji
authors: Dawei
authors: D
authors: Zhou
authors: Shu
authors: S
authors: Zhang
authors: Monica Ann
authors: MA
authors: Cawley
authors: Xinping
authors: X
authors: Fang
authors: Jinn
authors: J
authors: Wu
mesh_terms: D000730:Androstadienes / Q000097:blood*; D002853:Chromatography, Liquid / Q000379:methods*; D000068298:Fluticasone; D006801:Humans; D015203:Reproducibility of Results; D052616:Solid Phase Extraction / Q000379:methods*; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D000730:Androstadienes; D000068298:Fluticasone