Table 2

Correlation between detection of Treponema pallidum antibodies by plasma TPPA and DBS TPPA
(n=1147) TPPA plasma
Positive Negative Total
DBS TPPA Positive 169 10 179
Negative 8 960 968
Total 177 970 1147*

sensitivity of DBS against plasma 95.5% (95% CI: 91.3–98,0%).

specificity of DBS against plasma 99.0% (95% CI: 98.1–99.5%).

* excluding 34 indeterminate results.

Smit et al.

Smit et al. BMC Infectious Diseases 2013 13:102   doi:10.1186/1471-2334-13-102

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