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Table 1 Comparisons of the calculated concentrations from two different plates run the exact same way.

From: An improved competitive inhibition enzymatic immunoassay method for tetrodotoxin quantification

Concentration 1
(ng/ml)
Concentration 2
(ng/ml)
Mean
(ng/ml)
Standard
Deviation
CV
(%)
Percent
Difference
104.37 107.72 106.05 2.37 2.23 3.16
72.77 74.67 73.72 1.34 1.82 2.57
50.22 44.93 47.58 3.74 7.86 11.12
23.87 23.13 23.50 0.52 2.23 3.15
10.31 10.93 10.62 0.43 4.10 5.80
  1. Actual standard concentrations were 100, 75, 50, 25, and 10 ng/mL from top to bottom, and were made for each plate independently