Molecule has high glycosylation with total mass about 38.5 kDa from LC-MS data Reference: Intact Human Alpha-Acid Glycoprotein Analyzed by ESI-qTOF-MS: Simultaneous Determination of the Glycan Composition of Multiple Glycosylation Sites J Proteome Res 2018 Nov 2;17(11):3693-3703. doi: 10.1021/acs.jproteome.8b00309.