Process validation (PV) aims at reassuring a manufacturer of constant product quality. It is also a regulatory requirement to achieve licensure of a pharmaceutical product. Failing to efficiently plan and execute activities on that stage leads to increased time-to-market.
The fact that in the 22 pages of the latest FDA guidance document on process validation, statistical approaches and the need of statisticians in a multi-disciplinary team is mentioned no less but 15 times underscores the importance of showing statistical confidence about the chosen control strategy for critical process parameters (CPPs), input material and measured critical quality attributes (CQAs) during the manufacturing process (ICH Q8 (R2) 2009, 8).