High-throughput screening for various classes of doping agents using a new dilute-and-shoot' liquid chromatography-tandem mass spectrometry multi-target approach

A new multi-target approach based on liquid chromatography electrospray ionization tandem mass spectrometry (LC-(ESI)-MS/MS) is presented to screen for various classes of prohibited substances using direct injection of urine specimens. With a highly sensitive new generation hybrid mass spectrometer classic groups of drugs for example, diuretics, beta2-agonists stimulants and narcotics are detectable at concentration levels far below the required limits.