Process Robustness Review Checklist for QA Approval

Recognizing the early signs of process robustness issues is critical for effective intervention. Symptoms may present as variations in product quality, inconsistencies during batch production, or unexpected deviations in critical…

Process Robustness Lessons from PPQ Failures

The initial signal of a robustness issue emerged during an internal audit, where discrepancies in yield and purity levels were observed across batches that were supposed to follow a well-established…

Process Robustness Lessons from PPQ Failures

The first indicator of failure in the PPQ phase was an unexpected increase in the number of out-of-specification (OOS) results during critical quality attribute (CQA) testing. These OOS results primarily…