TABLE 2.

Qualitative results obtained by the ELISA and FTA-Abs testa

IgG ELISA resultNo. of samples with the following FTA-ABS test result:
ReactiveNonreactiveTotal
Reactive3220322
Nonreactive2117119
Total324117441
  • a Sensitivity (322 of 324 samples), 99.4%; specificity (117 of 117 samples), 100%; agreement (439 of 441 samples), 99.5%.