FIGURE 2.

Validation of metabolomic quantitation of four metabolites by correlation with routine clinical laboratory methods. Correlations of (A) creatinine, (B) glucose, (C) alanine, and (D) glutamine concentrations with the concentrations measured in the p180 metabolomics assay (“sum of hexoses”: 90–95% glucose). Pearson’s correlation coefficients (r) are indicated. Creatinine and glucose concentrations were partly above the upper limits of quantification (ULOQ). Dashed line: line of identity for each comparison.