| Nominal concentration (ng/mL) |
Observed concentration
(ng/mL, mean ± S.D.) |
Precision a
(%) |
Accuracy b
(%) |
| 10 |
|
|
|
| (Day-1) |
10.58 ± 0.67 |
6.31 |
105.83 |
| (Day-2) |
9.98 ± 0.82 |
8.20 |
99.75 |
| (Day-3) |
10.72 ± 0.69 |
6.40 |
107.18 |
| 40 |
|
|
|
| (Day-1) |
39.05 ± 2.93 |
7.50 |
97.63 |
| (Day-2) |
39.12 ± 3.20 |
8.17 |
97.79 |
| (Day-3) |
43.13 ± 1.24 |
2.88 |
107.83 |
| 800 |
|
|
|
| (Day-1) |
742.67 ± 34.20 |
4.60 |
92.83 |
| (Day-2) |
761 ± 38.43 |
5.05 |
95.13 |
| (Day-3) |
750.50 ± 29.34 |
3.91 |
93.81 |
| 1600 |
|
|
|
| (Day-1) |
1542 ± 43.09 |
2.79 |
96.77 |
| (Day-2) |
1614 ± 52.92 |
3.28 |
100.88 |
| (Day-3) |
1615 ± 82.64 |
5.12 |
100.94 |
a Expressed as % R.S.D. (S.D./mean) × 100.
b Calculated as (mean determined concentration/nominal concentration) × 100. |
