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. 2009 Oct 28;16(12):1781–1788. doi: 10.1128/CVI.00248-09

TABLE 5.

IgG anti-PT ELISA accuracy results using WHO pertussis antiserum (human) reference reagent

Anti-PT IgG concn (IU/ml) for NIBSC 06/140 (reference)a Anti-PT IgG concn (EU/ml)
% Accuracyb
Replicate 1 Replicate 2 Replicate 3 Geometric mean Expected valueb
50 56 54 57 56 50 112
100 109 101 104 105 100 105
150 152 147 151 150 150 100
200 197 247 196 212 200 106
a

WHO Pertussis antiserum (human) reference reagent, NIBSC 06/140.

b

Expected value and accuracy calculations were based on the assumption that 1 IU = 1 EU (39).