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

Table 5

Correlation coefficients of the high-value groups of PCT with clinical and serological measures in early RA.

Variable	Disease duration	RF	Anti-CCP	Anti-RA33
Low groups of PCT	0.292	-0.215	0.006	0.085
High groups of PCT	-0.093	-0.161	0.225	0.417