| MALDI | Matrix-assisted laser desorption ionization |
| TOF | Time-of-flight |
| MS | Mass spectrometry |
| SAX | Strong anion exchange |
| SPE | Solid-phase extraction |
| CHPTAC | 3-Chloro-2-hydroxypropyltrimethylammonium chloride |
| ECH | Epichlorohydrin |
| IAA | Iodoacetamide |
| DTT | 1,4-dithiothreitiol |
| BSA | Bovine serum albumin |