| Recovery level | Sample (µg/mL) | Standard (µg/mL) | Amount found (µg/mL) | % Recovery | Mean (%) ±SD | % RSD |
| 50% | 80 | 40 | 119.01 119.93 120.02 | 99.17 99.42 100.01 | 99.706 ± 0.466 | 0.467 |
| 100% | 80 | 80 | 161.05 159.70 158.26 | 100.65 99.81 98.91 | 99.79 ± 0.870 | 0.872 |
| 150% | 80 | 120 | 198.01 199.58 196.63 | 99.00 99.78 98.31 | 99.03 ± 0.735 | 0.743 |