| Parameter | NLB | NLX | NLT |
| Linearity range (µg mL-1) | 5-200 | 20-240 | 10-280 |
| Regression equation | y=0.0024x+0.4718 | y= 0.0018x+0.3183 | y=0.0011x+0.3898 |
| Correlation coefficient (r) | 0.9997 | 0.9995 | 0.9996 |
| Standard deviation of residuals, Sy/x | 0.0041 | 0.0042 | 0.0062 |
| Standard deviation of intercept, Sa | 0.0002 | 0.0025 | 0.0015 |
| Standard deviation of slope, (Sb) | 0.0002 | 0.0001 | 0.0001 |
| Limit of detection (LOD) | 0.3 | 4.6 | 6.5 |
| Limit of quantification (LOQ) | 5 | 20 | 10 |
| %RSD | 0.2 | 0.2 | 0.7 |
| %Error* | 0.0001 | 0.0001 | 0.0064 |
