Nominal con. (ng/mL) | Stability | Mean ± SD | Accuracy (%) | Precision (% CV) | |||
---|---|---|---|---|---|---|---|
(d)-form | (l)-form | (d)-form | (l)-form | (d)-form | (l)-form | ||
300 | 0 h | 317 ± 9.07 | 286 ± 8.34 | 106 | 95 | 2.86 | 2.91 |
12 h (bench-top) | 323 ± 5.01 | 257 ± 2.76 | 108 | 86 | 1.55 | 1.07 | |
24 h (in-injector) | 326 ± 9.72 | 317 ± 5.2 | 109 | 106 | 2.98 | 1.64 | |
Freeze-thaw | 340 ± 12 | 296 ± 10 | 113 | 99 | 3.52 | 3.4 | |
25 days at −80 °C | 338 ± 1.47 | 318 ± 3.4 | 113 | 106 | 0.43 | 1.0 | |
5000 | 0 h | 4681 ± 54.3 | 4478 ± 28.9 | 93 | 90 | 1.16 | 0.64 |
12 h (bench-top) | 4734 ± 47.4 | 5183 ± 38.5 | 95 | 104 | 1 | 0.74 | |
24 h (in-injector) | 4697 ± 35.1 | 5013 ± 60.7 | 94 | 100 | 0.74 | 1.21 | |
Freeze-thaw | 4737 ± 70.2 | 4826 ± 51.2 | 95 | 97 | 1.48 | 1.05 | |
25 days at −80 °C | 4705 ± 35.4 | 4478 ± 32.7 | 94 | 90 | 0.76 | 0.73 |