Dextromethamphetamine/Levomethamphetamine:MRto:Pt:Urine:Qn
dextromethamphetamine/levomethamphetamine:mrto:pt:urine:qn
Dextromethamphetamine/Levomethamphetamine:Mass Ratio:To identify measures at a point in time:Urine:Quantitative
dextromethamphetamine/levomethamphetamine:mass ratio:to identify measures at a point in time:urine:quantitative