Process Validation Strategy in 3 Simple Steps
Process Validation Strategy in 3 Simple Steps
January 6, 2026
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The Problem
For decades, "three validation batches" was the industry gold standard. But modern FDA guidance focuses on lifecycle approaches and statistical justification, not magic numbers. Relying on an arbitrary number without scientific backing can lead to compliance questions.
Example: You're planning a validation protocol. Do you have to run three batches to satisfy FDA requirements, or can you justify fewer?
Here's how KeyPedia helps you build a scientifically sound validation strategy: Just ask KeyPedia to clarify current FDA expectations on validation batch numbers.
Why? Because KeyPedia's input is fed from guidance documents, FDA regulations, good practices, FDA-483s, and Warning Letters.
1. Ask
Ask KeyPedia:
Do I have to perform three validation batches to satisfy FDA requirements? ›
2. Review
KeyPedia explains that while "three" is a common baseline, it is not an absolute rule—justification based on process complexity and variability is key. See the complete KeyPedia response in Dan's LinkedIn post below.
3. Implement
Use the insight to write a validation protocol based on scientific justification, not just tradition.

From tick-box compliance to scientific understanding, see how KeyPedia helps you modernize your validation approach:
Engage with Dan's LinkedIn post →