Fig. 3From: S100A8 and S100A9 in saliva, blood and gingival crevicular fluid for screening established periodontitis: a cross-sectional studyReceiver operating characteristic (ROC) curve for established periodontitis (stage II–IV) screening ability (c-statistics) of S100A8 and S100A9 in saliva, blood and gingival crevicular fluid (GCF) (n = 149)Back to article page