RAY H. LIU / DENNIS V. CANFIELD / SHENG-MENG WANG
The analysis of drugs and their metabolites in biological media are now expected to routinely achieve � 20% accuracy in the ng/mL concentration level. Therefore, the availability and the selection of quality ion-pairs designating the analytes and their isotopically labeled analogs (ILAs) are important considerations in achieving the accuracy of qua
