Comparison of accuracy, sensitivity, and specificity of multilevel PLS-DA models for significantly changed metabolites, peptides, and inflammation biomarkers. The abbreviations Lowxg, B6h0C, B6hRT, P24h4C, and P24hRT represent a low centrifugation force (1300g), blood incubation at 0 °C for 6 h, blood incubation at RT for 6 h, plasma incubation at 4 °C for 24 h, and plasma incubation at RT for 24 h, respectively.