Each guide answers one question an investigator or QA reviewer actually asks, cites the regulation, and shows the weak version next to the defensible one. Read them in module order or jump to the one you need today.
A plain-language definition of a deviation under EU GMP and PIC/S PE 009, the difference between deviations, incidents and planned deviations, and worked examples of borderline cases.
Read the guideHow to classify deviations using ICH Q9 principles, what each class should trigger, how classification is commonly done wrong, and a decision table you can adapt.
Read the guideWhy 'human error' is the most cited root cause failure in inspections, what a defensible root cause looks like, and how to use timeline analysis, 5 Whys and Ishikawa without producing a decorative diagram.
Read the guideHow to assess product, patient, process, equipment and regulatory impact, why most assessments are scoped too narrowly, and the questions QA should ask before closing.
Read the guideThe structure, language and evidence an inspector expects in a deviation report, the sections that are most often missing, and a section-by-section template.
Read the guideHow to derive corrective and preventive actions from a root cause, why 'retrain' is rarely enough, and how to design an effectiveness check that measures recurrence rather than completion.
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