highly significantP < .001
Table 4 depicts the detailed comparison analysis of plasma citrulline levels with the presence and absence of HLA genotype Agreement between plasma citrulline and DBS filter paper citrulline assay Correlation between plasma and DBS filter paper citrulline levels was evaluated in 405 cases and the obtained correlation was statistically highly significant (Interclass Correlation Coefficient = .50, P < .001).