Table 2.
Nominal concentration (ng/mL) | RSD (%, n=5) |
||
---|---|---|---|
Freeze–thaw | At 4 °C, 12 h | At −20 °C, 3 weeks | |
25 | 6.2 | 6.9 | 9.2 |
100 | 4.7 | 7.5 | 8.3 |
500 | 5.6 | 5.8 | 6.5 |
Nominal concentration (ng/mL) | RSD (%, n=5) |
||
---|---|---|---|
Freeze–thaw | At 4 °C, 12 h | At −20 °C, 3 weeks | |
25 | 6.2 | 6.9 | 9.2 |
100 | 4.7 | 7.5 | 8.3 |
500 | 5.6 | 5.8 | 6.5 |