Glycan microarrays are presentations of multiple glycans or glycoconjugates printed on a single slide for screening with GBPs, which include lectins, antibodies, bacteria, and viruses. Glycans are usually derivatized with functional groups and immobilized onto the activated glass slides at similar concentrations for each glycan. The utility of a glycan microarray is directly related to the number and variety of the glycans available on the printed surface for interrogation by GBPs.