07 Oct New PIC/S PI 006-4 published: RECOMMENDATIONS ON QUALIFICATION AND VALIDATION
PIC/S (Pharmaceutical Inspection Cooperation Scheme) has published the new version of guidance document PI 006-4 – Recommendations on Qualification and Validation, which comes into force on 1 October 2026. The document replaces the previous PI 006-3 dated 25 September 2007 and updates its content, drawing on the 2015 revision of Annex 15 and significantly expanding the level of detail in the specific recommendations on topics relating to qualification and validation in pharmaceutical manufacturing facilities.
The scope of the principles set out in the individual sections of this document equally applies to the manufacture of active pharmaceutical ingredients (APIs), intermediates and finished dosage forms.
One of the key topics throughout the document is the strengthening of the lifecycle approach to qualification and validation. Although this concept is already present in Annex 15, guideline PI 006-4 applies it in a more pragmatic way, linking together planning, change control, deviation management, continuous monitoring.
One of the most significant features of the new guidance is the evolution of the approach to process validation. PI 006-4 emphasises that the number of batches used for initial validation must be scientifically justified on the basis of process knowledge, process variability and the outcomes of the risk assessment.
The section on cleaning validation is one of the most extensive and detailed parts of the document and, compared with Annex 15, explains certain basic concepts more explicitly. Cleaning programs should be scaled according to toxicological risk assessments (e.g. based on HBEL values), which dictate the operational and technical controls required to deliver a validated cleaning process.
PI 006-4 addresses other topics relating to qualifications and validation, providing instructions on:
- Verification of Transportation
- Validation of Packaging
- Qualification of Supporting Utilities
- Validation of Test Methods
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