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Blood Carfentanil Concentrations (ng/mL) in Drug-Impaired Driving Investigations in Ontario from 2017 to 2019
| Year | Number | Minimum | Maximum | Mediana | Meana |
|---|---|---|---|---|---|
| 2017 | 4 | 0.13 | 0.31 | 0.28 | 0.25 |
| 2018 | 2 | <0.1b | 0.13 | ||
| 2019 | 60 | <0.04b | 2.1 | 0.16 | 0.25 |
| All years | 66 | <0.04 | 2.1 | 0.16 | 0.25 |
| All yearsc | 65 | <0.04 | 0.62 | 0.16 | 0.21 |
Data less than the lower LOQ excluded from the calculation.
Lower LOQ change in 2019.
Exclusion of an unusually high concentration (2.1 ng/mL).
