title: A fast liquid chromatographic/mass spectrometric screening method for the simultaneous detection of synthetic glucocorticoids, some stimulants, anti-oestrogen drugs and synthetic anabolic steroids.
abstract: A fast liquid chromatographic/mass spectrometric (LC/MS/MS) screening method for the detection, in urine, of synthetic glucocorticoids, stimulants (formoterol, modafinil and mesocarb), anti-oestrogens (finasteride, exemestane, anastrozole, letrozole and formestane) and synthetic anabolic steroids (stanozolol, gestrinone and tetrahydrogestrinone) is described. All these drugs (and/or their urinary metabolites) can be simultaneously extracted by a single liquid/liquid extraction step, at alkaline pH, after enzymatic hydrolysis with beta-glucuronidase, and assayed in 7 min by LC/MS/MS using electrospray ionization in positive ion mode and multiple reaction monitoring as the acquisition mode. All compounds show good reproducibility of both the retention times (CV% <2%) and the relative abundances (CV% <10%). The limits of detection for the anti-oestrogens, glucocorticoids and steroids are in the range of 1-30 ng/mL, and for the stimulants are in the range of 100-200 ng/mL, thus satisfying the minimum required performance limits of the World Anti-Doping Agency.
authors.affiliation: Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Giulio Onesti 1, 00197 Rome, Italy.
authors.forename: Monica
authors.initials: M
authors.lastname: Mazzarino
authors.forename: Francesco
authors.initials: F
authors.lastname: Botrè
mesh_terms: D045930:Anabolic Agents / Q000652:urine*; D000697:Central Nervous System Stimulants / Q000652:urine*; D002851:Chromatography, High Pressure Liquid; D004300:Doping in Sports / Q000379:methods; D004965:Estrogen Antagonists / Q000652:urine*; D005938:Glucocorticoids / Q000652:urine*; D006801:Humans; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: D045930:Anabolic Agents; D000697:Central Nervous System Stimulants; D004965:Estrogen Antagonists; D005938:Glucocorticoids