Fig. 2From: Immunoassay standardization for the detection of immunoglobulin A (IgA) against Porphyromonas gingivalis antigens in saliva of individuals with and without leprosyROC curve constructed with the OD triplicate averages obtained for each sample. In blue, the curve for the P. gingivalis crude extract antigen: area under the curve = 0.720; p = 0.014; CI 0.56–0.88, cut-off 0.134, sensitivity = 66.7% and specificity = 73.7%. In green, the curve for HmuY antigen: area under the curve = 0.588; p = 0.328; CI 0.41–0.76, cut-off = 0.134, sensitivity+ 62.5% and specificity = 52.6%Back to article page