From: Modified enzyme multiplied immunoassay technique of methotrexate assay to improve sensitivity and reduce cost
Level
Target
Mean
SD
%CV
%Bias
1
0.05
0.050
0.004
9.43
< 0.01
2
0.12
0.121
0.010
8.22
0.83%
3
0.43
0.428
0.021
5.02
−0.47%
4
0.82
0.817
0.026
3.22
−0.37%