This document discusses different types of quality audits, including internal audits conducted by a company to ensure quality standards are met, external audits conducted by outside parties to ensure standards are met for suppliers or customers, and different focused audits like process, product, and system audits. It also outlines the audit process and how to prepare for an audit by having the proper documentation in place like protocols, consent forms, safety reports, agreements, personnel records, case report forms, and source data.