Quality Control concentration [ng/ml]
Interday (n=8 for each QC level)
Intraday (n=6 for each QC level)
Precision [RSD, %]
a
Accuracy [bias, %]
b
Precision [RSD, %]
c
Accuracy [bias, %]
d
F
NF
F
NF
N
NF
N
NF
0.5
5.7
7.0
0.1
7.3
5.5
7.0
0.5
3.0
4.0
3.3
8.0
1.1
10.3
3.1
5.0
-1.4
2.2
20.0
4.2
8.9
-3.0
4.8
3.0
10.3
0.1
-3.5
a: RSD, relative standard deviation calculated as SD/mean × 100
b: Bias, calculated as (mean-specified concentration)/specified concentration × 100
Table 2:
Inter- and intraday variability of fentanyl (F) and norfentanyl (NF).
