Table 2.
Assessment of accuracy and precision from quality control samplesa
| Nominal
(ng/mL) |
GM
(ng/mL) |
S.D.
(ng/mL) |
DEV
(%) |
BRP
(%) |
WRP
(%) |
n |
|---|---|---|---|---|---|---|
| 3.00 | 2.99 | 0.10 | -0.49 | 1.72 | 2.64 | 20 |
| 200 | 190.70 | 4.76 | -4.65 | 1.36 | 2.19 | 20 |
| 400 | 378.91 | 13.43 | -5.27 | 1.68 | 3.22 | 20 |
| 2000 | 1876.8 | 75.90 | -6.16 | 3.31 | 2.78 | 20 |
Abbreviations: GM, grand mean; S.D., standard deviation; DEV, percent deviation from nominal value; WRP, within-run precision; BRP, between-run precision; n, total number of replicate observations within the validation runs.
a
Five samples at each concentration were run on four different occasions.