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Response (peak intensity ratio of drug:deuterated drug) for seven narcotic drugs using an OSX polymer for each run (n = 8) electrosprayed at 5 kV with 9:1 (v/v) methanol:water spray solvent with 1-μL sample loading of 5000 ng/mL concentration of each drug in urine.
| Drug | Avg Response | RSD, % |
|---|---|---|
| Amphetamine | 0.907 | 0.027 |
| Methamphetamine | 1.05 | 0.02 |
| MDA | 1.08 | 0.01 |
| MDMA | 1.14 | 0.16 |
| MDEA | 1.23 | 0.01 |
| Morphine | 1.17 | 0.23 |
| Cocaine | 0.971 | 0.006 |
