Analysis of Doping Agents Using Ultrafast LC-MS/MS with Scheduled MRM

In this poster, real urine samples from a horse doping laboratory were tested after sample pretreatment for various corticosteroids and other small molecules. The samples were analyzed using the high sensitivity triple quadrupole mass spectrometer LCMS-8050 coupled to a NEXERA X2 UHPLC operating in scheduled MRM mode with fast polarity switching (5 msec) for the detection of positively and negatively charged ions in one run.