Conducting supplier and service provider audits is a key requirement under the GMP rules and guidelines. A certificate from a supplier or service provider for critical products is not enough on its own. Qualification is required, and this can include an audit directly on site that must be repeated at regular intervals. When these audits are conducted by an independent 3rd party, being able to absolutely rely on the quality of performance is essential. Ensuring compliance along the entire relevant supply chain, nationally and internationally, is always the goal.