Institute for Hepatitis and Virus Research View Institution's Website 1 article published in JoVE Biology Chemically-blocked Antibody Microarray for Multiplexed High-throughput Profiling of Specific Protein Glycosylation in Complex Samples Chen Lu1, Joshua L. Wonsidler1, Jianwei Li2, Yanming Du1, Timothy Block3, Brian Haab4, Songming Chen1 1Institute for Hepatitis and Virus Research, 2Department of Microbiology and Immunology, Thomas Jefferson University, 3Drexel University College of Medicine, 4Van Andel Research Institute In this study, we describe an improved protocol for a multiplexed high-throughput antibody microarray with lectin detection method that can be used in glycosylation profiling of specific proteins. This protocol features new reliable reagents and significantly reduces the time, cost, and lab equipment requirements as compared to the previous procedure.