Table 2: Within- and between-day imprecision (CV%) and inaccuracy (Bias%) for pHPAA evaluated on the three urinary QCs
|
Analyte |
Theoretical concentration (mg/L) |
Within-day (n=5) |
Between-day (n=12) |
||||
|
Measured concentration (average ± SD) |
CV% |
Bias% |
Measured concentration (average ± SD) |
CV% |
Bias% |
||
|
pHPAA |
12.8 |
11.4 ± 0.5 |
4.0 |
-11.4 |
12.4 ± 1.3 |
10.6 |
-3.3 |
|
28.7 |
25.6 ± 0.7 |
2.7 |
-10.9 |
27.7 ± 2.3 |
8.3 |
-3.4 |
|
|
68.4 |
64.3 ± 1.5 |
2.4 |
-5.9 |
64.1 ± 4.3 |
6.7 |
-6.3 |
|