The 7 Deadly Sins of Test Method Validation

Test method validation failures rarely happen because teams “don’t know validation.” They happen because of shortcuts, unclear intent, weak planning, and poor control of variables until the method falls apart during audits, investigations, or scale-up. In this Friday In-Focus session, Simon Föeger (CEO & Founder, SIFo GmbH) breaks down the “7 deadly sins” that most often derail test method validation and what high-quality, regulator-ready validation looks like instead. You will learn: • The 7 most common validation failure patterns (and how to spot them early) • How to define intended use and acceptance criteria so the method is defensible • Choosing samples, ranges, and worst-case conditions without over-testing • Controlling variability: operators, equipment, environment, and measurement system effects • Practical documentation that holds up in audits and tech file reviews • How to avoid rework by aligning validation with risk and product requirements Speaker: • Simon Föeger — CEO & Founder, SIFo GmbH Replay and chapters below. 00:00 – Welcome and why test method validation fails in real life 03:20 – The “7 deadly sins” framework: overview of the common failure modes 07:10 – Sin #1: unclear intended use and scope of the test method 12:05 – Sin #2: weak acceptance criteria and success definitions 17:30 – Sin #3: poor sample selection, ranges, and worst-case justification 23:10 – Sin #4: uncontrolled variability (operators, equipment, environment) 30:25 – Sin #5: inadequate measurement system understanding and data integrity 36:40 – Sin #6: documentation gaps that break audit defensibility 43:15 – Sin #7: validating in isolation (not linked to requirements and risk) 49:20 – Practical validation workflow: planning, execution, reporting, maintenance 55:30 – Q&A and wrap-up