Table 4.
The calibration equation, linearity (R2), precision (%RSD), LOD and LOQ
| Compound | Calibration equation | R2 | %RSD | Accuracy, % | LOD (µg/mL) | LOQ (µg/mL) | |
|---|---|---|---|---|---|---|---|
| 1 µg/mL | 0.1 µg/mL | ||||||
| Acetaminophen | y = 1.0976x + 0.0141 | 0.998 | 7.30 | 3.896 | 100.27 | 0.1293 | 0.3919 |
| Caffeine | y = 1.1494x + 0.0288 | 0.997 | 3.87 | 2.142 | 103.11 | 0.1513 | 0.4584 |
| Acetylsalicylic acid | y = 0.294x + 0.026 | 0.997 | 0.54 | 6.239 | 105.86 | 0.1203 | 0.3645 |
| Ibuprofen | y = 0.0793x + 0.0081 | 0.998 | 0.53 | 9.417 | 96.76 | 1.221 | 3.6998 |
| Diclofenac sodium salt | y = 0.7216x + 0.2011 | 0.993 | 0.34 | 3.633 | 104.82 | 0.1938 | 0.5872 |