Reagents for fractionating target proteins from complex biological fluids, such as plasma, serum, CSF, urine or other tissue or cellular sources, and the subsequent chemical analysis of compounds physiologically associated with abundant proteins including proteins, peptides, fatty acids, hormones, glycosylation states, phosphorylation states, etc; Reagents for diagnosis of diseases associated with albumin, IgG, Fibrinogen, Transferrin, IgA, IgM, a2-Macroglobulin, a1-Acid Glycoprotein, a1-Anti...