This volume looks at key methodologies that are commonly used across antibody drug conjugates (ADCs) programs. The chapters in this book cover topics such as conjugations to endogenous cysteine residues; click chemistry conjugations; antibody conjugations via glycosyl remodeling; analysis of ADCs by native mass spectrometry; characterization of ADCs by capillary electrophoresis; LC/MS methods for studying lysosomal ADC catabolism; and determination of ADC concentration by ligand-binding assays. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step- by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Cutting-edge