Quality assurance is a broad concept, covering all factors, which individually or collectively affect the quality of a product. The sum total of measures organized to ensure that medicinal products are of the quality required for their intended use.
Quality control is that part of good manufacturing practice that deals with sampling, specification and testing, and organization, documentation and release procedures that ensure that necessary and relevant tests are actually carried out and that materials are not released for use, or sold or supplied. release for, until their quality is judged to be satisfactory.