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Table 2 Inter-day Imprecision for Modified MTX Assay

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%

  1. N = 25, Unit: μmol/L