Table 1.
Back-calculated concentrations from calibration curves run in duplicate on four occasions
| Nominal
(ng/mL) |
GM
(ng/mL) |
S.D.
(ng/mL) |
DEV(%) | R.S.D.(%) | n |
|---|---|---|---|---|---|
| 1.00 | 1.09 | 0.041 | 9.37 | 3.75 | 8 |
| 2.00 | 2.03 | 0.101 | 1.57 | 4.95 | 8 |
| 5.00 | 4.92 | 0.228 | -1.66 | 4.63 | 8 |
| 10.0 | 9.59 | 0.494 | -4.15 | 5.15 | 8 |
| 50.0 | 48.49 | 2.410 | -3.02 | 4.97 | 8 |
| 100 | 96.89 | 2.736 | -3.11 | 2.82 | 8 |
| 500 | 504.99 | 10.605 | 1.00 | 2.10 | 8 |
Abbreviations: GM, grand mean; S.D., standard deviation; DEV, percent deviation from nominal value; R.S.D., relative standard deviation; n, total number of replicate observations within the validation runs.