| S. No | NAC | TAU | ||
| Concentration (ng/spot) | Peak Area | Concentration (ng/spot) | Peak Area | |
| 1 | 150 | 1958 | 500 | 7679 |
| 2 | 150 | 1927 | 500 | 7642 |
| 3 | 150 | 1945 | 500 | 7659 |
| 4 | 150 | 1960 | 500 | 7635 |
| 5 | 150 | 1933 | 500 | 7648 |
| 6 | 150 | 1950 | 500 | 7663 |
| Mean |
| 1945.5 |
| 7654.33 |
| % RSD |
| 0.68 |
| 0.21 |