USP–NF contains four general chapters regarding the development, validation, and analysis of bioassays (biological assays): Design and Analysis of Biological Assays 〈111〉, Design and Development of Biological Assays 〈1032〉, Biological Assay Validation 〈1033〉, and Analysis of Biological Assays 〈1034〉. This proposed new chapter, Biological Assay Chapters—Overview and Glossary 〈1030〉, provides an overview and some material common to chapters 〈1032〉, 〈1033〉, and 〈1034〉, including a glossary of bioassay-related terms.