Table 2. Stability of paclitaxel concentration in cell lysate and culture medium (n = 5).
| Analyte nominal concentration (ng/mL) | Conditions | Measured concentration (Mean ± SD) | Accuracy (RE%) | Precision (RSD%) |
|---|---|---|---|---|
| 1 | 4 h, ambient | 1.07 ± 0.12 | 7.00 | 10.84 |
| 4000 | 3946.38 ± 176.19 | 1.34 | 4.45 | |
| 1 | 3 freeze-thaw cycles (−20°C/ambient) | 1.09 ± 0.12 | 9.20 | 11.30 |
| 4000 | 3959.60 ± 206.41 | 1.01 | 5.21 | |
| 1 | −80°C/30 days | 1.06 ± 0.13 | 6.40 | 11.94 |
| 4000 | 4042.02 ± 212.51 | 1.05 | 1.05 |
Note: SD, standard deviation; RE, relative error; RSD, relative standard deviation.