Combining Calcitonin and Procalcitonin and Rheumatoid Arthritis-Related Biomarkers Improve Diagnostic Outcomes in Early Rheumatoid Arthritis

Figure 5

Corresponding ROC curve for a single serum biomarker and combinations of serum biomarkers in early rheumatoid arthritis along with their respective area under the curve (AUC), compared with healthy individuals. (a) ROC analysis of RF, RF combined with PCT and CT. (b) ROC analysis of anti-CCP, anti-CCP combined with PCT and CT. (c) ROC analysis of anti-RA33, anti-RA33 combined with PCT and CT. (d) ROC analysis of RF and anti-CCP, RF and anti-CCP combined with PCT and CT. (e) ROC analysis of RF and anti-RA33, RF and anti-RA33 combined with PCT and CT. (f) ROC analysis of anti-CCP and anti-RA33, anti-CCP and anti-RA33 combined with PCT and CT.

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