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If your facility conducts preclinical studies, toxicology testing, or pharmaceutical research, GLP compliance isn't optional — it's a regulatory requirement. And animal housing is one of the areas inspectors look at closely.

This guide explains what GLP-compliant animal housing means, what it requires, and what equipment you need to meet the standard.

What Is GLP?

GLP stands for Good Laboratory Practice. It is an international quality standard that governs how non-clinical safety studies are planned, performed, monitored, recorded, and reported.

GLP is enforced by regulatory bodies including the FDA (USA), OECD (international), and national authorities in the EU, Japan, and other countries. Any facility submitting safety data to these regulators must operate under GLP.

Why Animal Housing Matters Under GLP

Animal housing directly affects study data. If the housing environment is inconsistent — temperature fluctuations, poor ventilation, cross-contamination between groups — the data becomes unreliable and non-compliant.

GLP requires that:

· Animals are housed in a controlled, documented environment

· Housing conditions are monitored and recorded

· Individual animals can be identified and tracked throughout the study

· Cross-contamination between study groups is prevented

· Equipment is cleanable, durable, and traceable

Key Requirements for GLP-Compliant Animal Housing

Controlled Environment

Temperature, humidity, lighting cycles, and ventilation must be maintained within defined ranges and logged continuously. Any deviation must be documented and investigated.

Individual Identification and Traceability

Each animal must be individually identified (ear tag, microchip, or cage card) and linked to a specific study protocol. This is non-negotiable under GLP.

Prevention of Cross-Contamination

Animals from different study groups must be housed separately. Cage systems with independent compartments are required — open colony housing is not acceptable for most GLP studies.

Cleanable, Non-Reactive Surfaces

All surfaces that contact animals or their environment must be easy to clean and disinfect without degradation. SUS304 stainless steel is the standard material choice because it:

· Withstands repeated chemical disinfection

· Has no porous surfaces that harbor pathogens

· Does not react with cleaning agents

· Maintains surface integrity over years of use

Plastic caging may be acceptable in some contexts but has significant limitations — it degrades under UV sterilization and strong disinfectants, and scratched surfaces can harbor bacteria.

Documented Maintenance and Cleaning Records

GLP requires written SOPs for cage cleaning, disinfection cycles, and equipment maintenance. Records must be retained and available for inspection.

What Equipment Is Required?

For rabbit housing in a GLP facility, a compliant setup typically includes:

· Multi-tier stainless steel rack system with independent compartments per animal

· Automatic watering system to ensure consistent water supply and reduce manual intervention

· Stainless steel feeders that are easy to clean and resistant to corrosion

· Open wire-mesh cage design for adequate ventilation and easy visual inspection

· Floor-standing rack structure that allows cleaning underneath and around the unit

Optional but common in higher-tier GLP facilities:

· Individually ventilated cages (IVC) for biosafety studies

· Environmental monitoring sensors integrated into the rack system

SUS304 Stainless Steel: The GLP Standard

Across GLP facilities worldwide, SUS304 stainless steel is the default material for animal housing equipment. It meets the surface quality, durability, and cleanability requirements of GLP, GMP, and ISO laboratory standards.

A well-maintained stainless steel rack system has a service life of 15–20 years — far exceeding plastic or coated steel alternatives — making it the most cost-effective choice for long-term GLP operations.

Summary: GLP Animal Housing Checklist

Our GLP-Compatible Rabbit Cage Systems

We manufacture SUS304 stainless steel rabbit cage rack systems designed for GLP, GMP, and ISO laboratory animal facilities. Features include multi-tier rack structure, independent compartments, automatic watering, and polished stainless steel surfaces throughout.

Standard and custom configurations available. We supply research institutions, pharmaceutical companies, and laboratory animal centers worldwide.

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