Quantifying 64 drugs, illicit substances, and D- and L- isomers in human oral fluid with liquid-liquid extraction
Table 7. Matrix effects and recovery
| Matrix Comparison | Matrix Comparison | ||
| Drug / Metabolite | %CV Analyte/IS ratio | Drug / Metabolite | %CV Analyte/IS ratio |
| 6-MAM | 8.81 | Methamphetamine | 4.60 |
| 7-Amino Clonazepam | 8.07 | Methylphenidate* | 3.45 |
| Alprazolam | 4.93 | Morphine | 10.44 |
| Amitriptyline | 5.12 | Naloxone | 7.88 |
| Amphetamine | 3.39 | Naltrexone | 6.78 |
| a-OH Alprazolam | 4.47 | Nicotine | 5.26 |
| Benzoylecgonine | 5.92 | Norbuprenorphine | 5.29 |
| Buprenorphine | 5.10 | Nordiazepam | 4.60 |
| Carisoprodol | 4.89 | Norfentanyl | 8.78 |
| Chlordiazepoxide | 3.21 | Norhydrocodone | 8.62 |
| Clonazepam | 4.68 | Norketamine | 5.50 |
| Codeine | 11.05 | Noroxycodone | 10.41 |
| Cotinine | 2.26 | Noroxymorphone | 10.95 |
| Cyclobenzaprine | 3.71 | Nortriptyline | 3.63 |
| Desalkylflurazepam | 7.75 | O-desmethyl Tramadol | 5.27 |
| Desipramine | 4.87 | Oxazepam | 2.89 |
| Diazepam | 4.21 | Oxycodone | 9.24 |
| Dihydrocodeine | 8.82 | Oxymorphone | 6.63 |
| Doxepin | 3.02 | Paroxetine | 9.65 |
| EDDP | 4.09 | Phencyclidine | 5.15 |
| Fentanyl | 3.12 | Pregabalin | 17.52 |
| Fluoxetine | 5.33 | Ritalinic Acid* | 16.03 |
| Gabapentin | 13.88 | Tapentadol | 4.74 |
| Hydrocodone | 10.52 | Temazepam | 3.32 |
| Hydromorphone | 12.29 | Tramadol* | 4.61 |
| Imipramine | 4.60 | Venlafaxine | 2.88 |
| Ketamine | 6.11 | Zaleplon | 3.76 |
| Lorazepam | 3.93 | Zolpidem | 3.76 |
| MDA | 6.76 | Zopiclone | 8.40 |
| MDMA | 4.36 | THC-COOH | 8.14 |
| MDPV | 5.65 | D-Amphetamine | 1.59 |
| Meperidine | 2.84 | L-Amphetamine | 2.35 |
| Meprobamate | 3.94 | D-Methamphetamine | 7.54 |
| Methadone | 3.93 | L-Methamphetamine | 3.09 |
Note: Ten different lots of oral fluid fortified with QC material to a concentration of 75 ng/mL and the %CV determined of the analyte per internal standard area ratio