If you work in pharmaceutical development, biotechnology, or life sciences research, you have almost certainly encountered both GLP and GMP. The two terms look similar and both fall under the GxP umbrella — but they govern completely different activities, apply to different people, and are enforced by different regulatory frameworks.
Confusing GLP with GMP — or misunderstanding where one ends and the other begins — is a common source of compliance errors, especially for organisations moving a product from research and development into manufacturing for the first time.
This guide explains exactly what GLP and GMP are, how they differ, where they overlap, and what each means for your training and compliance obligations.
What is GMP, Good Manufacturing Practices?
GMP stands for Good Manufacturing Practices. It is the regulatory framework that governs how pharmaceutical products, biologics, active pharmaceutical ingredients, APIs, and medical devices are manufactured, processed, packaged, tested, and released to the market.
GMP applies from the point at which a product enters commercial or clinical manufacturing — when it is being produced for use in humans, whether in a clinical trial or on the commercial market.
The primary goal of GMP is to ensure that every batch of a product is:
- Consistently manufactured to a defined quality standard
- Safe for its intended use
- Free from contamination, mix-ups, and errors
- Manufactured in accordance with the marketing authorisation or product specification
Key GMP regulatory frameworks:
- FDA 21 CFR Parts 210 & 211 — cGMP for finished pharmaceuticals, US
- FDA 21 CFR Part 610 — cGMP for biological products, US
- EudraLex Volume 4 — EU GMP for medicinal products, EU/EEA
- ICH Q7 — GMP for Active Pharmaceutical Ingredients, global
- WHO GMP — WHO guidelines for pharmaceutical manufacturing, global
What is GLP, Good Laboratory Practices?
GLP stands for Good Laboratory Practices. It is the regulatory framework that governs how non-clinical safety studies are planned, conducted, monitored, recorded, archived, and reported.
Non-clinical safety studies are the laboratory and animal studies conducted before a new drug, chemical, or product is tested in humans. These studies generate the safety data that regulatory authorities use to decide whether a new substance is safe enough to proceed to clinical trials and, eventually, to the market.
The primary goal of GLP is to ensure that non-clinical safety data is:
- Generated under a defined and controlled study plan
- Recorded accurately and completely
- Attributable to specific personnel and equipment
- Archived in a way that allows reconstruction of the study
- Reliable and reproducible — so regulators can trust the data submitted in a regulatory dossier
Key GLP regulatory frameworks:
- OECD GLP Principles — the internationally harmonised GLP standard, adopted by 40+ countries
- FDA 21 CFR Part 58 — GLP regulations for non-clinical laboratory studies, US
- EU Directive 2004/10/EC — GLP implementation in the European Union
- MHRA GLP — UK GLP regulations, post-Brexit, aligned with OECD
GLP vs GMP — The Core Difference
The single most important distinction between GLP and GMP is what stage of product development they apply to and what type of activity they govern.
| GLP | GMP | |
| Applies to | Non-clinical safety studies, pre-human | Manufacturing of products for clinical or commercial use |
| Stage | Research and development — before clinical trials | Clinical manufacturing and commercial production |
| Purpose | Generate reliable safety data for regulatory submissions | Produce consistently safe, effective, quality products |
| Output | Study reports submitted in regulatory dossiers | Batches of product released for clinical or commercial use |
| Key document | Study Plan / Protocol | Batch Manufacturing Record |
| Unique role | Study Director | Qualified Person, QP / Quality Control Unit |
| Inspection body | GLP Monitoring Authority, OECD-recognised | FDA, EMA, MHRA, WHO, GMP inspectorates |
In simple terms:
- GLP governs the safety testing that happens before a product is manufactured for human use
- GMP governs the manufacturing of that product once it moves into clinical or commercial production
GLP vs GMP — Detailed Comparison
1. Scope and Application
GLP applies specifically to non-clinical safety studies — studies conducted in a laboratory setting, in vitro, or using animals, in vivo, to assess the potential toxicity, carcinogenicity, genotoxicity, reproductive toxicity, and other safety parameters of a substance.
GLP does NOT apply to:
- Basic research, exploratory or hypothesis-generating studies
- Clinical trials in humans, where GCP applies
- Manufacturing of drug products, where GMP applies
- Quality control testing of marketed products, where GMP applies
GMP applies to:
- Manufacturing of finished pharmaceutical products, tablets, injectables, biologics
- Manufacturing of active pharmaceutical ingredients, APIs
- Packaging and labelling of medicinal products
- Quality control testing of manufactured products
- Storage of pharmaceutical products prior to distribution, overlapping with GDP
2. The Study Director vs the Qualified Person
One of the most distinctive structural differences between GLP and GMP is the unique accountability role each requires.
GLP — The Study Director
Under OECD GLP Principles and FDA 21 CFR Part 58, every GLP study must have a named Study Director — an individual scientist who is the single point of control for the study. The Study Director is personally responsible for:
- The overall conduct of the study
- Ensuring the study is conducted in accordance with the study plan
- Ensuring all raw data is fully documented
- Signing and dating the final study report
There can only be one Study Director per study, though a Principal Investigator may manage specific phases.
GMP — The Qualified Person, QP
Under EU GMP, EudraLex Volume 4, every manufacturing authorisation holder must have at least one named Qualified Person, QP — a qualified professional who is personally responsible for:
- Certifying that each batch of medicinal product complies with GMP and the relevant marketing authorisation before release to market
- Ensuring the batch record has been reviewed and approved
- Ensuring that all testing has been completed satisfactorily
The FDA does not have an exact equivalent — it uses a Quality Control Unit, QCU model instead.
3. Documentation Requirements
Both GLP and GMP are documentation-intensive frameworks — but the types of documents differ significantly.
GLP Documentation:
- Study Plan — the master document that defines the objectives, design, methods, and procedures for each study. Must be approved before the study starts.
- Raw Data — all original observations and records, including laboratory notebooks, instrument printouts, photographs
- Deviations — any departure from the study plan must be documented and assessed
- Final Study Report — the comprehensive report of the study, signed by the Study Director, submitted to regulatory authorities
GMP Documentation:
- Master Manufacturing Formula / Master Batch Record — defines the complete manufacturing process for a product
- Batch Manufacturing Record, BMR — the completed record for each individual batch, showing all steps performed
- SOPs — Standard Operating Procedures covering every critical manufacturing activity
- Certificates of Analysis, CoAs — testing results for raw materials and finished products
- Deviation and CAPA records — documentation of process failures and their resolution
4. Quality Assurance Function
Both GLP and GMP require an independent Quality Assurance, QA, function — but the QA role differs.
GLP Quality Assurance Unit, QAU
The GLP QAU is responsible for:
- Inspecting ongoing studies to ensure they are being conducted in compliance with GLP
- Inspecting facilities to ensure GLP standards are maintained
- Reviewing final study reports before submission
- Reporting directly to management — independent from the Study Director
GMP Quality Control Unit / QA Department
The GMP QA function is responsible for:
- Approving or rejecting all materials, components, and finished products
- Reviewing and approving batch records before product release
- Managing the deviation and CAPA system
- Overseeing the change control process
- Conducting internal GMP audits
5. Facilities and Equipment Requirements
GLP Facilities
GLP requires that test facilities are of suitable size, construction, and location to meet the requirements of the studies being conducted. Key requirements include:
- Separate areas for different study types to prevent cross-contamination
- Appropriate animal housing facilities, for in vivo studies
- Validated laboratory equipment with current calibration records
- Controlled environmental conditions, temperature, humidity, lighting
- Archives for secure storage of raw data and study records
GMP Facilities
GMP facility requirements are more extensive, reflecting the direct impact of the manufacturing environment on product quality:
- Classified clean rooms for sterile and aseptic manufacturing
- Validated HVAC systems for environmental control
- Validated water systems, Purified Water, Water for Injection
- Equipment qualification, IQ/OQ/PQ, for all critical manufacturing equipment
- Validated cleaning procedures to prevent cross-contamination between products
- Environmental monitoring programmes
6. Training Requirements
Both GLP and GMP require documented training — but the content differs.
GLP Training Requirements:
All GLP study personnel must be trained on:
- OECD GLP Principles, or applicable national GLP regulations
- Their specific role in each study
- The study plan and any amendments
- SOPs for the laboratory procedures they perform
- Animal welfare requirements, for in vivo studies
Training must be documented and records maintained in personnel files. See our Good Laboratory Practices, OECD Focused course for structured GLP training.
GMP Training Requirements:
All GMP personnel must be trained on:
- cGMP regulations applicable to their role, 21 CFR Parts 210/211 for US; EudraLex Volume 4 for EU
- SOPs covering every activity they perform
- Data integrity and documentation standards
- Contamination control and hygiene
- Equipment operation and cleaning
Annual GMP refresher training is required in most regulatory frameworks.
Where GLP and GMP Intersect — The Drug Development Lifecycle
To understand how GLP and GMP fit together, it helps to trace a drug through its development lifecycle:
| Stage | Activity | Applicable Framework |
| Discovery | Basic research — exploratory studies | No GxP required |
| Pre-clinical | Toxicology, safety pharmacology, genotoxicity studies | GLP |
| Clinical manufacturing | Manufacturing of drug substance and drug product for Phase I–III trials | GMP, clinical |
| Clinical trials | Conducting trials in human subjects | GCP |
| Commercial manufacturing | Manufacturing of approved product for market | GMP, commercial |
| Distribution | Wholesale distribution to pharmacies and hospitals | GDP |
A pharmaceutical company developing a new drug must comply with GLP for its non-clinical studies, GMP for manufacturing, and GCP for its clinical trials — often simultaneously on different workstreams.
GLP vs GMP vs GCP — The Full Picture
Many professionals work across all three disciplines and need to understand how they relate to each other.
| Feature | GLP | GMP | GCP |
| Full name | Good Laboratory Practices | Good Manufacturing Practices | Good Clinical Practices |
| Applies to | Non-clinical safety studies | Manufacturing of drug products | Clinical trials in humans |
| Stage | Pre-clinical | Clinical + commercial | Clinical |
| Key document | Study Plan | Batch Manufacturing Record | Clinical Trial Protocol |
| Key role | Study Director | Qualified Person, QP | Principal Investigator |
| Governed by | OECD, FDA 21 CFR 58, EU Dir. 2004/10 | FDA 21 CFR 210/211, EudraLex Vol. 4 | ICH E6(R3), FDA 21 CFR 312 |
| QA function | QAU, independent from Study Director | QA / QCU, independent from production | Sponsor oversight / IRB |
Who Needs GLP Training vs GMP Training?
You need GLP training if you:
- Work in a non-clinical safety testing laboratory
- Are a Study Director or Principal Investigator on GLP studies
- Perform laboratory work covered by a GLP study plan
- Work in the QAU of a GLP test facility
- Manage animal facilities used in GLP studies
You need GMP training if you:
- Work in pharmaceutical or biopharmaceutical manufacturing
- Work in a QA or QC function at a manufacturing site
- Are involved in the release of batches of medicinal products
- Work in engineering, validation, or facilities at a manufacturing site
- Are a Qualified Person, EU, or part of the Quality Control Unit, US
You need both GLP and GMP training if you:
- Work at a CRO or integrated pharma company that both generates non-clinical safety data and manufactures clinical trial materials
- Work in regulatory affairs and need to understand the data generated across both frameworks
Frequently Asked Questions
Is GLP part of GMP?
No. GLP and GMP are separate regulatory frameworks covering different activities. GLP governs non-clinical safety studies; GMP governs manufacturing. Both fall under the broader GxP umbrella but are governed by different regulations.
Do GLP laboratories need to follow GMP?
Not necessarily. A dedicated GLP testing laboratory conducting non-clinical safety studies must follow GLP — not GMP. However, if the same facility also manufactures products or performs quality control testing for released products, GMP may also apply to those activities.
Which is more stringent — GLP or GMP?
They are different rather than one being more stringent than the other. GMP has more extensive facility, equipment, and validation requirements because it directly governs products that reach patients. GLP has strict study integrity and data reliability requirements because the data is submitted to regulators to support safety decisions.
Can GLP data be used in a GMP dossier?
Yes. GLP non-clinical safety data is submitted as part of a regulatory dossier, such as an NDA, BLA, or MAA, to support approval of a drug for clinical trials or commercial use. The GMP manufacturing data is submitted separately.
What is the difference between a GLP study plan and a GMP batch record?
A GLP study plan defines how a specific non-clinical safety study will be conducted. A GMP batch record documents how a specific batch of product was manufactured. Both are critical regulatory documents, but they serve completely different purposes.
Conclusion
GLP and GMP are both essential GxP frameworks in the pharmaceutical industry — but they govern fundamentally different activities. GLP applies to non-clinical safety studies conducted before a product is tested in humans. GMP applies to the manufacturing of pharmaceutical products for clinical or commercial use.
Understanding where each framework applies — and how they fit into the broader drug development lifecycle — is essential for any professional working in pharmaceutical development, manufacturing, or regulatory affairs.
Whether you need GLP training, GMP training, or both, structured online training aligned with current regulatory frameworks is the most efficient way to build your knowledge and generate the documented training records regulators require.
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