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

Table 4

Correlation coefficients of PCT and CT with clinical and serological measures in the whole course of RA.

Variable	Age	Disease duration	Sharp scores	ESR	CRP	RF	Anti-CCP	Anti-RA33	PCT
	82	82	82	82	82	82	64	71	82
PCT	0.064	0.183	0.025	0.360	0.371	0.063	0.223	0.090	—
CT	-0.132	0.009	0.039	-0.097	0.232	-0.015	0.014	0.194	0.205