Validation (IQ/OQ/PQ)
Validation (IQ/OQ/PQ) is the documented proof that your equipment and cleanroom actually perform to EU GMP: installation qualification confirms they are installed correctly, operational qualification confirms they run within spec, and performance qualification confirms they consistently produce the intended result. It usually starts earlier with design qualification (DQ) and is governed by EU GMP Annex 15. Without it, a plant is not GMP-ready.
The four qualification stages, defined
Each stage answers one question, in one citable sentence:
- DQ, design qualification: documented evidence that the proposed facility, cleanroom, and equipment design meets your user and GMP requirements before anything is built or bought.
- IQ, installation qualification: documented evidence that equipment and utilities are installed, connected, and configured exactly as specified.
- OQ, operational qualification: documented evidence that each machine and the cleanroom operate correctly across their defined operating ranges.
- PQ, performance qualification: documented evidence that the line consistently produces compliant, repeatable output under real production conditions.
DQ comes first and prevents expensive design mistakes; IQ, OQ, and PQ run in sequence as the plant is built, started, and proven.
Where FAT and SAT fit
Before formal qualification, two acceptance tests de-risk the build:
- FAT, factory acceptance testing: equipment is verified against specification at the supplier’s premises, before it ships, so defects are caught while the supplier still has the machine.
- SAT, site acceptance testing: key checks are repeated once the equipment is installed at your facility, confirming it survived transport and integrates with your utilities.
FAT and SAT are not a substitute for qualification, but their evidence feeds directly into IQ and OQ, shortening the path to a validated plant.
EU GMP Annex 15: the rulebook
In the EU, qualification and validation are governed by EU GMP Annex 15 (Qualification and Validation). It sets out the qualification lifecycle (DQ, IQ, OQ, PQ), and expects a validation master plan, pre-approved protocols, recorded results, and a formal report for each stage. EU auditors and certification bodies apply Annex 15 as the reference standard, so building to it from the start is what keeps a nutraceutical facility audit-ready.
Validation in plain Q&A
- What is validation? Documented proof that equipment and environments do what they are meant to do, every time.
- Why does it matter? GMP and EU regulators require the evidence; without it the plant cannot be certified or trusted.
- What do you receive? Approved protocols and signed-off results for DQ, IQ, OQ, and PQ, the records that travel with the plant and support audit.
How it fits the project
Validation follows the build, after the cleanroom and equipment are installed, and runs alongside commissioning and operator training so the plant is proven and your team is ready at the same time. The resulting documentation supports GMP certification, and the whole sequence is a core stage of a turnkey factory setup.
Request a quote to discuss validation for your facility.
Frequently asked questions
DQ (design qualification) proves the design meets requirements before anything is built; IQ (installation qualification) proves the equipment is installed and connected correctly; OQ (operational qualification) proves it operates within its specified ranges; PQ (performance qualification) proves it consistently produces the intended result under real production conditions.
IQ is installation qualification (the equipment is installed correctly), OQ is operational qualification (it operates within its specified ranges), and PQ is performance qualification (it consistently produces the intended result in real conditions). They are usually preceded by DQ, design qualification.
FAT (factory acceptance testing) is verification of equipment at the supplier's site before shipment; SAT (site acceptance testing) repeats key checks once the equipment arrives at your facility. They de-risk a build by catching problems early and feed evidence into IQ and OQ.
EU GMP Annex 15 is the section of the EU Good Manufacturing Practice guidelines that sets out the principles of qualification and validation. It frames the lifecycle (DQ, IQ, OQ, PQ), expects a validation master plan and approved protocols, and is the reference EU auditors apply to a nutraceutical or pharmaceutical facility.
GMP requires documented evidence that equipment and environments do what they are supposed to. Validation provides that proof and the records auditors and certification bodies expect to see.
Yes. Validation is delivered with full documentation, the protocols and results for DQ, IQ, OQ, and PQ, so the plant is audit-ready and supports GMP certification.
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