GxP glossary

The terms that matter in an audit.

Precise, concise definitions from live GMP operations. Measured against the applicable regulations, not opinion. By engineers who work on the plant every day.

31 terms4 topicsAnnex 1 · 11 · 15 · GAMP 5 · ALCOA+
01

Qualification & Validation

From requirement to requalification, per EU-GMP Annex 15.

URS

Annex 15
User Requirements Specification

The user-side requirement spec: defines what a plant or system must do. The basis of every qualification; it must be testable, unambiguous and traceable.

DQ

Annex 15
Design Qualification

Documented evidence that the planned design meets the URS requirements, before construction.

IQ

Annex 15
Installation Qualification

Evidence that the plant and system are installed in accordance with the specification.

OQ

Annex 15
Operational Qualification

Evidence that the system functions as intended across its entire operating range.

PQ

Annex 15
Performance Qualification

Evidence that the system performs reliably and reproducibly under real operating conditions.

C&Q

ASTM E2500
Commissioning & Qualification

Integrated approach that brings technical commissioning and regulatory qualification together (leveraging), instead of testing twice.

Requalification

Annex 15

Risk-based, periodic evidence that a system maintains the validated state. Annex 15 deliberately names no rigid interval, but requires a justified determination.

Process validation

A lifecycle in three stages: Process Design, Process Qualification (PPQ) and Continued Process Verification (CPV). Does not end with three successful batches.

ASTM E2500

Risk- and science-based standard for verifying plants and systems. The basis for integrated C&Q.

02

Sterile Manufacturing & Cleanroom

What Annex 1 and the Contamination Control Strategy require.

Annex 1

EU-GMP

Revised EU-GMP guideline (2022, in force since 2023) for the manufacture of sterile medicinal products. Puts the Contamination Control Strategy at the centre.

CCS

Annex 1
Contamination Control Strategy

A facility-wide, documented strategy bringing together all contamination-relevant measures: from personnel and gowning to monitoring. Not a binder document, but a living management instrument.

Cleanroom class A–D

ISO 14644

Classification of air cleanliness by particle and microbial count. Class A is the most critical zone for aseptic processes.

RABS / Isolator

Annex 1

Barrier technology that separates the product from the operator (Restricted Access Barrier System or isolator). Annex 1 expects it for aseptic processes.

Media Fill

Aseptic Process Simulation: filling with growth medium instead of product to qualify the aseptic process and the personnel.

Environmental Monitoring

Ongoing monitoring of particles and microorganisms in the cleanroom, with trending. What matters is not the volume of data, but its significance.

03

CSV & Data Integrity

Validated systems per GAMP 5, data integrity per ALCOA+.

GxP

Umbrella term for the «Good x Practice» regulations: GMP (Manufacturing), GLP (Laboratory), GCP (Clinical), GDP (Distribution).

GMP / cGMP

Good Manufacturing Practice: the binding rules for the manufacture and testing of medicinal products. The «c» stands for «current».

GAMP 5

ISPE

ISPE guide for the risk-based validation of computerised systems. The 2nd edition emphasises Critical Thinking over form-filling.

CSV

Computer System Validation

Documented evidence that a computerised system is fit for its purpose and safeguards data integrity. Effort scales with patient risk and GxP impact.

CSA

FDA
Computer Software Assurance

Risk-based FDA approach that focuses testing effort where patient risk exists: less documentation, more assurance.

ALCOA+

Principles of data integrity: Attributable, Legible, Contemporaneous, Original, Accurate, plus complete, consistent, enduring, available.

Audit Trail

Annex 11

Secure, time-stamped record of the creation, change and deletion of GxP-relevant data. Must be reviewed on a risk basis, not merely recorded.

Annex 11 / Part 11

Regulations on computerised systems and electronic records: EU-GMP Annex 11 and US-FDA 21 CFR Part 11.

Data integrity

Completeness, consistency and trustworthiness of data across the entire lifecycle. Created at the outset through design, not at the end through inspection.

04

Engineering & Utilities

Plants, processes and media in full GMP operation.

Utilities

Media and supply systems (water, cleanroom air, gases) that determine product quality behind the scenes. Rarely in the spotlight, until they fail.

WFI

Water for Injection

The highest pharmaceutical water quality, for injectables. Qualified in three phases and monitored microbiologically.

PW

Purified Water

Purified water for non-sterile applications. Likewise qualified and monitored with trending.

HVAC

Heating, Ventilation, Air Conditioning: controls cleanroom class, pressure cascades and recovery times. Drifts when filter loading and air flows are not readjusted.

Tech-Transfer / Scale-up

Transfer of a process from laboratory to production scale under GMP. What works in the lab does not automatically work at full scale.

ICH Q9

Guideline on Quality Risk Management. The basis for risk-based decisions, for example on alarm and action limits.

Rouging

Corrosion film in stainless-steel water systems. Goes unnoticed without regular inspection and undermines system integrity.

Vispact GmbH, Visp (VS), Switzerland · GxP engineering and validation for pharma, biotech and medtech. The definitions follow the applicable regulations (EudraLex Vol. 4, ISPE GAMP 5, ISO 14644, ICH, US-FDA) and serve as orientation, not as a substitute for the respective source document.