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. 2014 Feb 11;9(2):e88698. doi: 10.1371/journal.pone.0088698

Figure 4. Correlation of plasma levels of WE-14 and CgA in patients with pheochromocytoma.

Figure 4

The occurrence of the tumor leads to an elevation of plasma WE-14, which was significantly and positively correlated with the elevation of CgA (r  =  0.72, p<0.0001, n  =  37). The grey zones indicate the upper limits (cut-off values for the test assays) of WE-14 and CgA concentrations in healthy volunteers. Values included in these zones correspond to false-negative test results. r, Pearson correlation coefficient.