From: Modified enzyme multiplied immunoassay technique of methotrexate assay to improve sensitivity and reduce cost
Level
Target
Mean
SD
%CV
%Bias
1
0.05
0.049
0.006
11.62
−1.60%
2
0.12
0.113
0.011
9.78
−5.67%
3
0.43
0.418
0.019
4.55
−2.88%
4
0.82
0.799
0.032
4.11
−2.59%