Table 2. Long-Term Stability of the Assay (n = 6).
time (d) | 0 |
3 |
5 |
7 |
||||
---|---|---|---|---|---|---|---|---|
conc. (μg/mL) | 5 | 100 | 5 | 100 | 5 | 100 | 5 | 100 |
mean (μg/mL) | 5.10 | 99.45 | 5.07 | 102.3 | 4.98 | 98.87 | 4.71 | 95.11 |
recovery (%) | 102.0 | 99.5 | 101.4 | 102.3 | 99.6 | 98.9 | 94.2 | 95.1 |
SD (μg/mL) | 0.43 | 7.12 | 0.30 | 9.35 | 0.36 | 5.86 | 0.28 | 6.66 |
RSD (%) | 8.36 | 7.16 | 5.96 | 9.13 | 7.22 | 5.93 | 5.91 | 7.00 |