Prove it does what the spec says under real conditions.
OQ protocol authoring and execution — scripted where risk demands it, unscripted where CSA allows it, vendor-evidence where the supplier already proved it.
Operational Qualification verifies each functional requirement against acceptance criteria defined before execution, under controlled conditions. It covers boundary and negative cases, access control, audit trail behaviour, electronic signatures, backup and restore, and error handling. Testing only the happy path is the most visible gap an auditor finds here.
Outcomes you can expect
- Executed OQ package
- Deviations resolved + retested
- RTM coverage report
Operational Qualification (OQ) Services is delivered by our validation & compliance services practice. Where it saves time, the team uses our products: GxP Copilot for validation lifecycle work and TraceDraft for clinical documentation.
Explore related capabilities: Computer System Validation (CSV), Computer Software Assurance (CSA), AI Validation Services (Annex 22), FDA 21 CFR Part 11 Compliance.
Risk-Based Test Case Selection: Volume Is Not Quality
An OQ with 500 test scripts covering every menu item provides less assurance than one with 80 precisely targeted scripts verifying data integrity controls, electronic signature components, audit trail content, access controls, and GxP-critical calculation outputs. Risk-based test case selection identifies what the system must do correctly for GxP compliance, what the consequences of failure are, and the most plausible failure modes — then tests those thoroughly. Our OQ designs are driven by the risk assessment, not by template completeness requirements.
The GAMP 5 Second Edition's CSA alignment means vendor-tested standard functionality can be accepted on the basis of the vendor's testing documentation, with customer OQ focusing on the configured layer and GxP-critical functions. For Category 4 configured systems, OQ focuses on configuration choices: workflows, access controls, e-signature settings, audit trail parameters, and calculation formulas. For Category 5 custom systems, OQ must cover the full functional scope without vendor evidence to leverage.
Deviation Management During OQ
Deviations during OQ are not validation failures — they are the intended mechanism for surfacing issues before the system enters production. What matters is how they are managed. We document deviations contemporaneously, classify by GxP impact (critical, major, minor), investigate root cause, remediate and retest, and obtain QA disposition before the OQ summary report is issued. Unresolved OQ deviations are never carried forward into PQ.
An OQ with zero deviations in a real system often reflects inadequate test coverage rather than exceptional system quality. A deviation that is documented, investigated, and resolved with confirmed root cause and verified fix is stronger evidence of assurance than a clean protocol executed against low-risk test cases.
Sources
Primary documents referred to on this page, from their official publishers.
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