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Summary of the stability of cirsimarin under various storage conditions (n = 3).
| Concentration (ng/mL) | Autosampler (4°C, 12 h) | Ambient (2 h) | –20°C (30 d) | Freeze-thaw | ||||
|---|---|---|---|---|---|---|---|---|
| Accuracy | RSD | Accuracy | RSD | Accuracy | RSD | Accuracy | RSD | |
| 4 | 106.8 | 5.1 | 101.8 | 5.6 | 106.8 | 7.8 | 104.4 | 13.8 |
| 180 | 99.0 | 4.2 | 97.1 | 9.9 | 99.0 | 11.1 | 92.3 | 5.6 |
| 2500 | 106.4 | 6.8 | 101.5 | 5.4 | 106.4 | 5.7 | 92.9 | 3.4 |
