Dextroamphetamine/Levoamphetamine:MRto:Pt:Urine:Qn
dextroamphetamine/levoamphetamine:mrto:pt:urine:qn
Dextroamphetamine/Levoamphetamine:Mass Ratio:To identify measures at a point in time:Urine:Quantitative
dextroamphetamine/levoamphetamine:mass ratio:to identify measures at a point in time:urine:quantitative