Fold change in intensity of common metabolites, lipid classes (summed), and peptide GRAVY score between each bead type and no beads (MTBE extraction) from human plasma. Each bar represents the average of three technical replicates. Bead types and venders are referenced in the text. The abbreviations used for the metabolites are as follows: cytidine 5’-diphosphocholine (CDP-choline), lysine (Lys), glycine (Gly), arginine (Arg), ornithine (Orn), 2-aminoadipic acid (2-AAA), aspartic acid (Asp), glutamic acid (Glu), glutathione (GSH), serine (Ser), nicotinamide (NAM), pantothenic acid (PA), and uridine monophosphate (UMP).