WHO Inspection Readiness Checklist for Manufacturers

WHO Inspection Readiness Checklist: A Strategic Guide for Manufacturers

For pharmaceutical manufacturers seeking or maintaining WHO Prequalification (PQP), successful GMP inspections are a non-negotiable milestone. Being inspection-ready at all times requires robust systems, thorough documentation, and well-prepared personnel. This detailed checklist outlines all critical components to prepare for a WHO GMP inspection, helping companies avoid common pitfalls and demonstrate full compliance with WHO TRS 986 and related guidelines.

1. General Facility Preparedness:

Ensure access routes, security, and reception procedures are defined
All visitor logs and security records must be current and accessible
Display updated organizational charts and site layout plans
Designate a central audit room for document review and team discussions

2. Documentation Control and Versioning:

Maintain a comprehensive SOP master list with version numbers and approval history
Ensure logbooks are bound, legible, and regularly reviewed
Electronic records must have audit trails enabled and access restricted by role
Key SOPs: Deviation management, cleaning validation, data integrity, and recall procedures

3. Quality Management System (QMS):

Present a Quality Manual aligned with WHO PQP expectations
Display clear QA-QC functional separation in organizational hierarchy
CAPA logs must be up-to-date, with root cause analysis and effectiveness checks
Annual Product Quality Review (APQR) reports should be ready for the last 2 years

Also Read: GMP for Injectable Products: Ensuring Safety and Compliance

4. Manufacturing

Operations:

Ensure line clearance SOPs are followed and documented
Display validated equipment ID and calibration status tags
Batch Manufacturing Records (BMRs) must be complete, signed, and traceable
Any critical alarms or deviations should be documented with CAPA

5. Quality Control Laboratory Readiness:

Stability studies must be compliant with ICH Q1A(R2)
Data integrity controls should be in place: backup, access logs, and timestamps
Instrument calibration records and raw data must be retained and accessible
Specifications and analytical methods should be current and validated

6. Material Management and Warehousing:

Vendor qualification records and certificates of analysis for APIs and excipients
Storage areas should be clean, temperature-controlled, and mapped
Labeling system must clearly identify status (Quarantine/Approved/Rejected)
Batch traceability from receipt to finished product should be demonstrable

7. Personnel Preparedness:

Assign an inspection coordination team with roles defined
Conduct mock inspection drills and prepare team leads for functional walkthroughs
Training records should cover all job-relevant GMP and SOP topics
Ensure key staff are familiar with recent WHO inspections and their outcomes

8. Validation and Qualification:

Hold master validation plans (MVP) for process, cleaning, and analytical methods
Equipment qualification protocols and reports should be accessible
Ensure ongoing cleaning validation and hold-time studies are updated
Risk assessments must justify requalification intervals and control strategies

9. Utilities and Environmental Monitoring:

HVAC, water system, and compressed air validation reports must be available
Environmental monitoring records should demonstrate compliance trends
Microbiological trending reports and alert/action limits need to be shown
Preventive maintenance logs for utilities and critical systems

10. Product Lifecycle and Post-Approval Changes:

Change control forms for any variations filed with WHO
Evidence of impact assessment and internal QA approval
Updated dossiers or addenda if submitted to WHO
Revalidation documentation if changes impacted critical parameters

11. Pharmacovigilance and Complaint Handling:

Complaint investigation SOPs and logbooks maintained
Tracking of adverse event reports and response timeline
Recall procedures tested via mock drills
Communication records with WHO PQ and procurement agencies (if applicable)

12. Training and Continuous Improvement:

Conduct periodic refresher training based on inspection feedback
Maintain a GMP training matrix by department
Audit findings from previous WHO or internal inspections should be addressed
Lessons learned documentation for inspection preparedness

13. Final Pre-Inspection Checks:

Conduct a mock walkthrough of the full facility
Ensure documents are organized by audit module (Production, QC, QA, Warehouse)
Run an internal review of high-risk areas (data integrity, cleaning, change control)
Designate a backup team for document retrieval and real-time coordination
Print updated organizational charts, product lists, and equipment status logs

Conclusion:

A WHO inspection is a comprehensive evaluation of quality culture and system resilience. By using this structured readiness checklist, manufacturers can confidently demonstrate GMP alignment and operational maturity. Consistent preparedness not only secures WHO prequalification status but also reinforces global trust and accelerates access to vital medicines worldwide.