Submission

The FDA’s regulatory requirements for process validation highlights the need for defining Critical Process Parameters (CPPs) based on Critical Quality Attributes (CQAs). As described by the FDA, a CQA is a characteristic within a range that ensures a specified level of product quality. These requirements highlight the focus of QbD, or Quality by Design. The ICH describes this view of quality assurance that focuses more on validating the process through control parameters and less on defining quality based on product testing.