| Added (pg/mL) | Founded (pg/mL) | Recovery (%) | RSD (%) |
| 0 | 0 | - | - |
| 0.05 | 0.043 | 86 | 9.2 |
| 0.5 | 0.53 | 106 | 6.2 |
| 5 | 4.82 | 96.4 | 5.3 |
| 50 | 54.7 | 109.4 | 8.8 |