ISO 13485 Internal Auditing Services

Our ISO 13485 internal auditing services support medical device organisations in assessing the effectiveness and compliance of their Quality Management System (QMS). Patient Guard provides expert auditors to ensure your system meets ISO 13485:2016 requirements and is fully prepared for certification or regulatory inspections.

Quality Assurance

ISO 13485 Internal Auditing Services

ISO 13485 internal audits are a critical requirement of maintaining a compliant Quality Management System. They ensure your processes are effectively implemented, compliant with regulatory requirements, and aligned with medical device standards.

Regular internal audits help identify non-conformities, gaps, and opportunities for improvement before external audits or Notified Body inspections.

Patient Guard acts as your independent internal audit partner, providing objective, expert-led audits to evaluate your QMS against ISO 13485:2016 and applicable regulatory frameworks such as EU MDR and UK MDR.

Without robust internal audits, organisations risk audit findings, regulatory delays, and potential non-compliance.

Patient Guard provides expert ISO 13485 internal audit services tailored to medical device manufacturers, start-ups, and suppliers. We support audit planning, execution, reporting, and corrective action follow-up.

Whether preparing for certification or maintaining compliance, we ensure your QMS is audit-ready.

Don’t wait for a Notified Body to find your gaps. We conduct ‘Full-Stress’ Mock Audits designed to replicate the intensity of an MDR or MHRA inspection. Our auditors look specifically for the common 2026 pitfalls: weak Post-Market Surveillance (PMS) links and outdated Clinical Evaluation Reports (CER)

New for April 2026: Are your clinical investigation files compliant with the today’s enforcement of the Clinical Trials Amendment Regulations 2025? We provide specialized audits for Trial Master Files, ensuring your data integrity and 25-year archiving protocols meet the new MHRA standards

Alex Lewis - Patient Guard - Quality Assurance Manager
"An internal audit shouldn't just be a compliance exercise; it’s your best defense against Notified Body non-conformities. We approach every 13485 audit with the same rigor as an external registrar, finding the gaps in your QMS before they become a risk to your certification."
Alex Lewis BSc, Qualified Lead Auditor

Quality Assurance Manager

ISO 13485 Internal Audit

Why Choose Patient Guard for ISO 13485 Internal Audits?

Established Regulatory Consultancy

Operating as a trusted industry partner since 2017, we specialise strictly in medical device quality systems and global regulatory compliance standards.

Trusted by 500+ Companies

We actively support diverse organisations across the full medical device lifecycle, from early-stage start-ups to established international manufacturers.

Independent & Objective Audits

We provide completely unbiased, detached assessments of your QMS to identify real product risks and structural gaps before external inspectors do.

Transparent Fixed Pricing

We believe in open operations. We provide clear, project-based or fixed annual pricing structures with absolutely no hidden costs.

Rigorous Regulatory Expertise

Our lead auditors completely align every evaluation with ISO 13485:2016, EU MDR, UK MDR, and ever-evolving global regulatory expectations.

Practical, Actionable Findings

We don’t just flag problems. We deliver clear, highly structured audit reports packed with practical recommendations to optimize your workflows.

patient guard

Patient Guard have been a great support service to Cormed, providing help and advice promptly whenever requested. They have become a virtual department within Cormed enabling us to keep up to date and comply with the regulatory requirements whilst ensuring our QMS works for us at the same time.”

Tracey Slater, Cormed

What Our ISO 13485 Internal Auditing Service Includes

Audit Planning & Scope

We precisely define the audit scope based directly on your active QMS architectures, device classifications, and target market requirements.

Full QMS Internal Audit

Our qualified lead auditors comprehensively assess your organizational processes against every clause of the ISO 13485:2016 standard.

Process-Based Evaluation

We systematically check high-risk operational pillars, including design controls, risk management integration, and supplier validation metrics.

Records & Dossier Review

We conduct deep reviews of your standard operating procedures, historical batch records, and technical compliance documentation files.

Detailed Audit Reporting

You receive an institutional-grade audit report clearly separating minor/major non-conformities, technical gaps, and practical observations.

Proactive CAPA Support

We don't leave you stranded with findings; we actively support your team during corrective and preventive action planning and system integration.

Pre-Certification Support

We design full-stress mock audits replicating the precise intensity of a Notified Body or MHRA inspector review to build total team confidence.

Who Requires ISO 13485 Internal Audits?

ISO 13485 Internal Audit Requirements

ISO 13485:2016 requires organisations to:

Internal audits are essential to demonstrate ongoing compliance and continual improvement.

Our Process

01

Audit planning

We define scope, schedule, and audit objectives.

02

Audit execution

We conduct the audit, including interviews, document review, and process assessment.

03

Reporting and CAPA

We provide findings, identify non-conformities, and support corrective actions.

ISO 13485 internal auditor

Industries We Support

We support ISO 13485 internal audits across:

Cost of Service

Premium

ISO 13485 Internal Auditing

£ 2,000

From

Ensure ongoing quality compliance and certification readiness with expert ISO 13485 quality audits. 

Audit Costs

  • Small Size Organisation (<10 employees) 2 day audit £2,000
  • Medium Size Organisation (10-50 employees) 3 day audit £3,000
  • Large Size Organisation (>50 employees) 4 day audit £4,000
  • Medical Device File Audit, one additional day and £1,000 on top of the above costs

Time Lines

01

Planning

1-2 weeks

02

Audit

1-2 days depending on organisation size

03

Reporting & CAPA

1-2 days depending on organisation size

Frequently Asked Questions (FAQs)

An internal audit is a systematic review of your Quality Management System to ensure compliance with ISO 13485 and regulatory requirements.

Internal audits should be conducted at planned intervals, typically annually or based on risk and process criticality.

Yes, Patient Guard provides independent auditors to ensure objective and unbiased audit results.

Non-conformities must be addressed through corrective actions, and we can support CAPA implementation.

Audit duration depends on organisation size and scope but typically ranges from 2–5 days.

Yes. Clause 8.2.4 of ISO 13485:2016 requires audits at 'planned intervals.' In the current 2026 regulatory climate, the MHRA and Notified Bodies expect to see a robust audit schedule that covers every process of your QMS at least once per year.

Absolutely. We offer a specific 'Medical Device File Audit' (Technical File) as a bolt-on to our QMS audits. This ensures your Annex II/III documentation (MDR) or Part II (UK MDR) is audit-ready and aligned with your quality procedures.

A Gap Analysis is a roadmap used before you have a system in place. An Internal Audit is a compliance check used after your system is live to verify it is actually being followed. We provide both to support you at every stage of your growth.

Related Services

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