| Solid Phase Extraction
method |
QC Sample Nominal Concentration (ng/mL) |
| LOQQC (10.04) |
LQC (25.37) |
MQC (907.10) |
HQC (1645.64) |
| % Accuracy |
Intra day* |
102.39 |
103.88 |
101.46 |
101.34 |
| Inter day# |
104.66 |
104.40 |
100.70 |
100.92 |
| % Precision |
Intra day* |
4.61 |
3.64 |
1.34 |
1.94 |
| Inter day# |
5.38 |
3.74 |
1.19 |
1.62 |
|
| *n=12, Accuracy expressed as (mean calculated concentration/nominal
concentration) × 100; #n=18, Precision or coefficient of variation (CV),expressed
as the ratio of the standard deviation to the mean. |
| Table 7: Precision and Accuracy of QC Samples Analyzed on Ion Trap MS (APCI
Source). |
