Testing of chemicals


  • Testing Programme of Manufactured Nanomaterials

    The OECD reveals the release of information on the accuracy of tests used to determine the safety of nanomaterials. The safety of Manufactured Nanomaterials is an important concern impacting regulatory bodies throughout the world. Due to their size, Manufactured Nanomaterials may require additional testing beyond the standard suite of tests used for other chemicals, to ensure that the impact on human health and the environment is fully understood.

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  • Mutual Acceptance of Data (MAD)

    Under the Mutual Acceptance of Data system, results from a chemical safety test conducted in OECD countries shall be accepted by other OECD and adhering countries if the test was carried out according to OECD Test Guidelines and GLP Principles.

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  • Adverse Outcome Pathways, Molecular Screening and Toxicogenomics

    OECD assists internationally collaborative efforts on Molecular Screening and Toxicogenomics with the aim of defining needs and possibilities for their application in a regulatory context.

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OECD assists countries in harmonising test methods for chemical safety and good laboratory practice, in order to ensure high quality and reliable data and for countries and industry to fully benefit from the OECD agreement on Mutual Acceptance of Data and avoid duplicative testing.


Test Guidelines Programme

The OECD Guidelines for the testing of chemicals are a collection of the most relevant internationally agreed testing methods used by governments, industry and independent laboratories to assess the safety of chemicals. They are primarily used in regulatory safety testing and subsequent chemical notification and registration.


Good Laboratory Practice

The OECD Principles of GLP have been developed to promote the quality, validity and reliability of non-clinical test data used for determining the safety of chemicals and chemical products. OECD works to promote a common understanding of, and harmonised approaches to, matters related to GLP and monitoring of compliance with the GLP Principles.


Endocrine Disrupters

‌‌Endocrine disruptors are chemicals that may interfere with the body’s endocrine system and produce adverse developmental, reproductive, neurological, and immune effects in both humans and wildlife. Work on this has been given high priority for regulatory authorities in most OECD countries and it has been proposed by UNEP as a SAICM policy emerging issue. 


Animal welfare 

‌‌‌‌‌Over 25 years ago, the OECD recognised the need to protect animals in general and in particular those used in experimental work for chemical safety testing. The progress in OECD on the harmonisation of chemicals testing, in particular the agreement on Mutual Acceptance of Data (MAD), by reducing duplicative testing, will do much to reduce the number of animals used in testing



Cutting Costs in Chemicals ‌Mgt

Cutting Costs in Chemicals Management Publication. Link to detailed page, which contains a PDF link to the publication. As government regulators are facing tighter budgets and chemical companies need to cut costs, this report describes how, by working together through the OECD, governments and industry save about EUR 150 million each year, while still ensuring that chemical products are properly assessed and managed.‌