Table 2– Diagnostic parameters of cyanide at different cut-off concentrations for Pseudomonas aeruginosa infection
Diagnostic parameterCut-off cyanide concentration μM
15.7#18.820.6
Sensitivity %97.288.983.3
Specificity %39.557.466.3
PPV %23.328.331.9
NPV %98.796.595.5

  • PPV: positive predictive value; NPV: negative predictive value. #: the detection limit of the assay for cyanide.