Quality Attribute Hierarchy

Quality attribute hierarchy establishes critical, major, and minor pharmaceutical characteristics guiding control intensity. Critical quality attributes directly affect safety or efficacy requiring stringent control. Major attributes substantially influence product performance warranting enhanced monitoring. Minor attributes have limited clinical significance permitting relaxed specifications. Risk assessment determines classification appropriateness.

Regulatory submissions justify hierarchy rationale. Quality by Design incorporates hierarchy guiding development. Manufacturing controls proportionately address hierarchy levels. Specifications reflect hierarchy classifications. Post-approval monitoring confirms hierarchy validity.