Spiked conc. (µg/mL) Mean response ± SD Inter-run (RSD%)
2 57333.27 ± 1109.148 1.93
4 75966.8 ± 2371.276 3.12
10 221859.6 ± 5534.238 2.49
100 160598.5 ± 4399.284 2.73
200 293177 ± 2511.768 0.85
300 428532.9 ± 2820.084 0.65
400 892793.1 ± 7691.935 0.86
500 1119745 ± 8069.782 0.72

Table 4: Reproducibility (Inter-run precision).SD: Standard deviation; RSD: Relative standard deviation.