| Immunosensor | HPLC | RE% |
| DA found (ng/mL) | DA found (ng/mL) | |
| 9 | 10 | −10 |
| 34 | 41 | −17 |
| 119 | 113 | 5 |
| 21 | 22 | −5 |
| 42 | 43 | −2 |
| 52 | 53 | −2 |
| 22 | 20 | −10 |
| 116 | 116 | 0 |
| 5 | 5 | 0 |
| 40 | 35 | 14 |