Effects of preanalytical variations on metabolites, peptides, and inflammation biomarkers. Colored areas indicate the number of analytes which are stable (cyan), increased (red), and decreased (green) relative to the control. 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.