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. 2011 Jul 8;6(7):e21230. doi: 10.1371/journal.pone.0021230

Figure 1. Correlation between repeated measurements of plasma and serum metabolites.

Figure 1

Correlation coefficients (r) between repeated measurements of metabolite concentrations were plotted. r values in serum are plotted against r values in plasma. Shapes represent different groups of metabolites: Acylcarnitines (•), Amino acids (▴), Hexose (+), and Glycerophospholipid (▪). Colors represent different subgroups of glycerophospholipids: lysoPhosphatidylcholine (blue), Phosphatidylcholine (red), and Sphingomyeline (green).