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| Analytes | Concentration (ng/mL) | Room temperature (3 h) | 10 °C (4 h) | Three freeze-thaw | 21 days | ||||
|---|---|---|---|---|---|---|---|---|---|
| RSD (%) | RE (%) | RSD (%) | RE (%) | RSD (%) | RE (%) | RSD (%) | RE (%) | ||
| crizotinib | 5 | 9.5 | −9.0 | 3.3 | 0.5 | 10.9 | −8.3 | 4.9 | −1.9 |
| 120 | 4.7 | −6.9 | 5.8 | 5.9 | 7.6 | −7.1 | 3.5 | 4.7 | |
| 240 | 4.3 | −1.6 | 5.8 | 3.6 | 5.6 | −7.4 | 5.8 | 6.9 | |
| 2-Keto crizotinib | 2 | 2.3 | 9.9 | 4.7 | 2.2 | 1.8 | 11.9 | 7.0 | 14.7 |
| 40 | 3.4 | 2.0 | 0.6 | 0.6 | 1.9 | −0.7 | 2.2 | 5.2 | |
| 80 | 2.2 | 3.0 | 2.3 | −0.6 | 1.5 | −0.7 | 5.6 | 5.9 | |
