Table 1.
Compound | LOQ, μg/L | Curve | Mean slope (SD) | Mean intercept (SD) | r2, range | Linear range, μg/L |
---|---|---|---|---|---|---|
THC | 0.25 | Low | 0.171 (0.013) | 0.005 (0.004) | 0.995–1.000 | 0.25–25 |
High | 0.137 (0.014) | 0.590 (0.558) | 0.995–1.000 | 25–100 | ||
11-OH-THC | 0.5 | Low | 0.183 (0.013) | 0.009 (0.005) | 0.994–0.999 | 0.5–25 |
High | 0.121 (0.013) | 1.271 (0.395) | 0.991–1.000 | 10–75 | ||
THCCOOH | 0.25 | Low | 0.191 (0.013) | 0.004 (0.003) | 0.996–1.000 | 0.25–25 |
High | 0.149 (0.016) | 0.814 (0.623) | 0.992–1.000 | 25–100 |