| |
Recovery (%) |
| For dofetilide at three concentrations (n=3) |
For amlodipine at three concentrations (n=3) |
| 10 ng/mL |
50 ng/mL |
100 ng/mL |
Mean recovery |
25 ng/mL |
100 ng/mL |
500 ng/mL |
Mean recovery |
| Short-termstorage |
|
|
|
|
|
|
|
|
| 24h (4°C) |
99.47 |
96.55 |
100.87 |
98.96 ± 1.27 |
105.86 |
101.90 |
95.64 |
101.13 ± 2.97 |
| 24h (-20°C) |
94.06 |
85.14 |
108.88 |
96.04 ± 6.91 |
98.45 |
95.86 |
99.51 |
97.94 ± 1.09 |
| Mid-termstorage |
|
|
|
|
|
|
|
|
| 1 week (4°C) |
102.84 |
97.61 |
98.77 |
99.74 ± 1.58 |
91.78 |
98.07 |
96.27 |
95.37 ± 1.87 |
| 1 week (-20°C) |
104.92 |
102.31 |
104.44 |
103.89 ± 0.80 |
98.71 |
100.81 |
100.90 |
100.14 ± 0.72 |
| Long-termstrorage |
|
|
|
|
|
|
|
|
| 5 weeks (4°C) |
81.09 |
87.37 |
76.51 |
81.66 ± 3.15* |
72.40 |
81.80 |
76.51 |
76.90 ± 2.72* |
| 5 weeks (-20°C) |
80.32 |
85.15 |
79.03 |
81.50 ± 1.87* |
87.05 |
90.12 |
91.54 |
89.57 ± 1.33* |
*P<0.001 |
