title: In vitro/in vivo correlations in biopharmaceutics: scientific and regulatory implications.
abstract: This paper explains the regulatory and scientific reasons for the regulatory authorities employing dissolution as a key variable for regulatory approval of batch to batch bioequivalence assurance, site of manufacture change, formulation changes, and batch size scale-up for immediate release dosage forms. It also explains the scientific and regulatory reasons why either an in vivo/in vitro correlation using USP's Level 'A', 'B' or 'C', or a newly proposed 'mapping' approach will be required for allowing such changes for controlled-release dosage forms.
authors.affiliation: Office of Research Resources, Food and Drug Administration, Washington, DC.
authors.forename: J P
authors.initials: JP
authors.lastname: Skelly
authors.forename: G F
authors.initials: GF
authors.lastname: Shiu
mesh_terms: D001702:Biopharmaceutics / Q000706:statistics & numerical data*; D003692:Delayed-Action Preparations; D006801:Humans; D007880:Legislation, Drug; D014481:United States
chemical_list: D003692:Delayed-Action Preparations