Fast and sensitive screening of oxandrolone and its major metabolite 17-epi-oxandrolone in human urine by UHPLC-MS/MS with on-line SPE sample pretreatment
Title
Fast and sensitive screening of oxandrolone and its major metabolite 17-epi-oxandrolone in human urine by UHPLC-MS/MS with on-line SPE sample pretreatment