ISO 13485 Audit Types and How They are Executed
The two main ISO 13485 audit types are internal and external audits. Audits are a key component of ISO 13485, and to become certified you must have internal audits and pass a 2-stage registrar audit conducted by an external party in order to become ISO 13485 certified. We will discuss the different ways audits can be conducted and discuss the differences between internal, external and certification audits.
The three ways audits can be conducted are:
- On-site audits are performed in full days. The number of days needed for an audit depends on several factors including size, complexity, risk and nature of an organization. The International Accreditation Forum (IAF) has provided guidelines for registrars to calculate audit time.
- Remote audits may be performed via web meetings, teleconferencing or electronic verification of processes. Remote audits are less common and typically not as effective as on-site audits.
- Self-audits do not always mean an internal audit. A self-audit can be requested of your customer to eliminate the need for them to use their resources and still offer some assurance that you are meeting requirements.
Internal audits are audits that are performed by your organization and are a self-examination of your organization’s QMS, performed on-site. Internal audits have many benefits including preparing your organization for external audits. The internal auditor must be independent of the area being audited to ensure objective results. (It is recommended to have more than one auditor to ensure no one is auditing his or her area of responsibilities). Internal audits are an ISO 13485 requirement and they are critical to the success of your QMS. (We offer internal audit training to ensure your internal auditors are able to perform an effective internal audit as well as an audit checklist to help guide your internal auditors on covering all areas of your QMS.)
Internal audits will be used to assess conformity, evaluate effectiveness and identify opportunities for improvement. When you perform an internal audit, you will be able to compare your quality management system to the requirements and understand if there are any non-conformances. This will allow you to correct your QMS and ensure you that your organization will meet the requirements for the external auditor and allow for certification.
External audits include customer, supplier, certification and surveillance. A customer audit is where an existing, or potential customer, audits your organization to verify you can or are meeting their requirements. If you are auditing an existing or potential supplier, we consider this a supplier audit. Supplier audits can be one of the methods used to meet the requirements around control of external providers.
A certification audit is the audit your selected registrar will conduct to verify conformance against the ISO 13485 standard before they issue your official ISO 13485 certificate. Certification audits are conducted in 2 stages. Stage one audit is performed to determine an organization’s readiness for stage two of the audit. Stage one is oftentimes conducted remotely in order to not spend additional costs on travel. If the auditor determines you meet the minimum criteria for the stage one audit, your organization will proceed with the stage two audit. Stage two audits will always be on-site audits. This is where the auditor will interview your staff and review your documented information (procedures, records, etc.) to verify you are meeting all the ISO 13485 requirements. Certification audits are typically conducted every three years.
After certification, your registrar will check-up on your periodically using surveillance audits to verify you are still upholding your QMS and the ISO requirements. Surveillance audits are very much like certification audits, with the exception that they are not issuing or re-issuing a certificate. These are typically conducted by your registrar annually.
How did auditing change under the latest revision of ISO 13485?
Changes between the ISO 13485:2003 and 2016 standard include several new clauses. You can expect that your auditor will be looking to see that you meet these requirements just the same as they will be confirming you meet all the other requirements. This is why it is important when you are beginning your journey towards ISO 13485:2016 certification that you have a gap analysis performed to identify any potential nonconformities you may have in these areas so that you can address these gaps before your certification audit.