The qualification of equipment, systems and facilities is a fundamental pillar of compliance with the Good Manufacturing Practices (GMP). However, qualification should not be understood as a one-off activity, but as a process throughout the life cycle. In this context, the re-qualification It emerges as a key tool to ensure that the state of control is maintained over time.

Current regulatory guidelines, especially the EU GMP Annex 15, they promote a risk based approach, moving away from automatic periodic re-qualifications and towards decisions that are justified, documented and aligned with the potential impact on product quality and patient safety.

What is re-qualification in GMP environments?

Re-qualification is the set of activities aimed at confirm that a previously qualified equipment, system or installation remains suitable for its intended use after a certain period of operation or as a consequence of a significant change, deviation or event.

May include:

• Partial or total repetition of IQ, OQ and/or PQ.
• Execution of specific tests focused on critical parameters.
• Documentary review of the validated status.

Principles of the risk-based approach applied to re-qualification

The risk-based approach is supported by the systematic application of quality risk management throughout the life cycle of equipment, systems and facilities. Its main objective is to ensure that qualification and re-qualification efforts focus on those aspects that can have a real impact on product quality and, ultimately, on patient safety.

This approach involves identifying the potential risks associated with the use of the equipment or system, evaluating both the probability of these risks materializing and the severity of their impact, and defining proportionate control measures. Likewise, it requires that the decisions made be duly documented and subject to periodic review, so that can be adjusted based on operational experience and data generated.

The application of the risk-based approach, in line with ICH Q9, allows the abandonment of rigid and prescriptive strategies, favoring justified technical decisions, consistent with the current regulatory expectations and with a efficient use of resources.

When is it necessary to carry out a re-qualification? Criteria and scenarios

The following describes the most common scenarios that may justify re-qualification, always evaluated from the risk:

When is a GMP re-qualification NOT necessary?

From a risk-based perspective, not all modifications or interventions on an equipment or system justify re-qualification. In those cases where the impact on critical parameters and intended use sea non-existent or clearly negligible, the repetition of qualification activities may not provide added value.

This occurs, for example, when changes are minor and adequately controlled through the change management system, when there is strong evidence of continuous control through monitoring, calibration and maintenance data, or when operational history demonstrates robust and stable behavior. In these situations, a documented technical evaluation, approved by the Quality area, is usually enough to justify the non-execution of a formal re-qualification.

Documentation and regulatory expectations

Regardless of whether or not it is decided to carry out a re-qualification, the key aspect from a regulatory point of view is the correct documentation of the reasoning followed. The authorities hope that the decisions are based on a clear, coherent and traceable risk assessment, integrated into the pharmaceutical quality system.

All justification must be reflected in the corresponding records, normally associated with change control, deviation management or periodic reviews. Furthermore, these decisions must have the approval of Quality and be easily defendable during an inspection, demonstrating that the adopted strategy guarantees the maintenance of the control state without compromising the quality of the product.

Conclusion: risk-based GMP re-qualification and next steps

Re-qualification should not be a routine or automatic activity. Apply a risk based approach allows:

• Maintain the validated state.
• Optimize resources.
• Align activities with current regulatory expectations.
• Focus efforts where there is truly an impact on product quality and patient safety.

A solid re-skilling strategy is, ultimately, a reflection of a mature and efficient quality system.

If your organization needs support to define risk-based re-qualification criteria, review existing strategies, or prepare for an audit or regulatory inspection, contact our team specialized in GMP qualification and validation. An independent analysis can help you strengthen compliance, optimize resources and ensure that the decisions made are solidly justified from a technical and regulatory point of view.