Table 1.
Accuracy and precision of the assay in rat serum. n=6 at each concentration
| Rat Serum | ||||||
|---|---|---|---|---|---|---|
| THC | ||||||
| Concentration (ng/mL) |
Intra-day | Inter-day | ||||
| Measured Concentration (mean ± SD; ng/mL) |
Precision (% RSD) |
Accuracy (% bias) |
Measured Concentration (mean ± SD; ng/mL) |
Precision (% RSD) |
Accuracy (% bias) |
|
| 2.5 | 3.0 ± 0.5 | 15.3 | 19.4 | 2.8 ± 0.4 | 12.7 | 13.4 |
| 6 | 5.2 ± 0.6 | 11.5 | −14.2 | 5.6 ± 0.6 | 11.3 | −7.3 |
| 80 | 84.4 ± 5.6 | 6.6 | 5.5 | 82.3 ± 8.1 | 9.8 | 2.9 |
| 180 | 161.6 ± 10.5 | 6.5 | −10.2 | 159.3 ± 14.8 | 9.3 | −11.5 |
| THC-COOH | ||||||
| Concentration (ng/mL) |
Intra-day | Inter-day | ||||
| Measured Concentration (mean ± SD; ng/mL) |
Precision (% RSD) |
Accuracy (% bias) |
Measured Concentration (mean ± SD; ng/mL) |
Precision (% RSD) |
Accuracy (% bias) |
|
| 2.5 | 2.9 ± 0.3 | 8.6 | 17.3 | 2.7 ± 0.4 | 13.0 | 9.1 |
| 6 | 5.3 ± 0.5 | 9.7 | −11.6 | 5.4 ± 0.5 | 8.9 | −10.4 |
| 80 | 85.6 ± 4.3 | 5.0 | 7.0 | 81.5 ± 4.1 | 5.1 | 1.8 |
| 180 | 164.3 ± 8.7 | 5.3 | −8.8 | 164.2 ± 10.9 | 6.7 | −8.8 |
| 11-OH-THC | ||||||
| Concentration (ng/mL) |
Intra-day | Inter-day | ||||
| Measured Concentration (mean ± SD; ng/mL) |
Precision (% RSD) |
Accuracy (% bias) |
Measured Concentration (mean ± SD; ng/mL) |
Precision (% RSD) |
Accuracy (% bias) |
|
| 2.5 | 2.2 ± 0.3 | 12.3 | −10.4 | 2.1 ± 0.2 | 7.8 | −14.7 |
| 6 | 5.3 ± 0.5 | 8.6 | −11.7 | 5.5 ± 0.5 | 9.3 | −8.6 |
| 80 | 79.5 ± 10.7 | 13.5 | −0.7 | 82.7 ± 10.2 | 12.4 | 3.4 |
| 180 | 153.5 ± 7.7 | 5.0 | −14.7 | 154.6 ± 14.3 | 9.3 | −14.1 |