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  • 16-July-2021

    English

    Section 4: Health Effects

    Interested parties are invited to send their comments on the Mammalian Erythrocyte Pig-a Gene Mutation Assay draft Test Guideline on the. Comments should be sent by 16 July 2021.

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  • 18-June-2021

    English

    Draft Guidance and Review Documents/Monographs

    Interested parties are invited to send their comments on the Draft Guidance Document for the Scientific Review of Adverse Outcome Pathways by 18 June 2021.

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  • 10-June-2021

    English

    Series on Testing and Assessment: publications by number

    This Series includes publications related to testing and assessment of chemicals; some of them support the development of OECD Test Guidelines (e.g. validation reports, guidance documents, detailed review papers).

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  • 17-May-2021

    English

    Webinar Series on Testing and Assessment Methodologies

    On 10 May 2021, the OECD presented the recently published Guidance Document on the Characterisation, Validation and Reporting of Physiologically Based Kinetic (PBK) Models for Regulatory Purposes. The webinar introduced the assessment framework for PBK models and the scientific workflow for characterising and validating PBK models. Watch the webinar video recording and access the presentation.

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  • 2-March-2021

    English

    Substitution of hazardous chemicals

    As the demand for safer chemicals grows, the field of alternatives assessment is becoming increasingly important in guiding the transition towards safer, less toxic alternatives. A major limitation that can hinder efforts is the lack of consistent criteria for defining “safer" alternatives. This guidance outlines key considerations for the identification and selection of safer alternatives.

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  • 17-February-2021

    English, PDF, 1,537kb

    Draft TG Metal Release 15Feb 2021 EC

    Draft TG Metal Release 15Feb 2021 EC

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  • 17-November-2020

    English

    OECD Work Related to Bees/Pollinators

    There have been reports these last years of declines in native and managed pollinators in several regions of the world. Potential factors associated with these declines are hypothesised to include habitat destruction, predators, certain agricultural practices, bee management practices, pathogens, climate change, nutrition and pesticides. There is uncertainty regarding the extent to which pesticides contribute to pollinator declines.

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  • 12-November-2020

    English

    OECD Work Related to Endocrine Disrupters

    The OECD has published the Revised Guidance Document 150 on Standardised Test Guidelines for Evaluating Chemicals for Endocrine Disruption originally published in 2012 and updated in 2018 to reflect new and updated OECD test guidelines, as well as reflect on scientific advances in the use of test methods and assessment of the endocrine activity of chemicals.

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  • 29-June-2020

    English

    Test No. 405: Acute Eye Irritation/Corrosion

    This method provides information on health hazard likely to arise from exposure to test substance (liquids, solids and aerosols) by application on the eye. This Test Guideline is intended preferably for use with albino rabbit. The test substance is applied in a single dose in the conjunctival sac of one eye of each animal. The other eye, which remains untreated, serves as a control. The initial test uses an animal; the dose level depends on the test substance nature. A confirmatory test should be made if a corrosive effect is not observed in the initial test, the irritant or negative response should be confirmed using up to two additional animals. It is recommended that it be conducted in a sequential manner in one animal at a time, rather than exposing the two additional animals simultaneously. The duration of the observation period should be sufficient to evaluate fully the magnitude and reversibility of the effects observed. The eyes should be examined at 1, 24, 48, and 72 hours after test substance application. The ocular irritation scores should be evaluated in conjunction with the nature and severity of lesions, and their reversibility or lack of reversibility. Use of topical anesthetics and systemic analgesics to avoid or minimize pain and distress in ocular safety testing procedures is described.
  • 29-June-2020

    English

    Test No. 491: Short Time Exposure In Vitro Test Method for Identifying i) Chemicals Inducing Serious Eye Damage and ii) Chemicals Not Requiring Classification for Eye Irritation or Serious Eye Damage

    This Test Guideline describes a cytotoxicity-based in vitro assay that is performed on a confluent monolayer of Statens Seruminstitut Rabbit Cornea (SIRC) cells, cultured on a 96-well polycarbonate microplate. After five-minute exposure to a test chemical, the cytotoxicity is quantitatively measured as the relative viability of SIRC cells using the MTT assay. Decreased cell viability is used to predict potential adverse effects leading to ocular damage. Cell viability is assessed by the quantitative measurement, after extraction from the cells, of blue formazan salt produced by the living cells by enzymatic conversion of the vital dye MTT, also known as Thiazolyl Blue Tetrazolium Bromide. The obtained cell viability is compared to the solvent control (relative viability) and used to estimate the potential eye hazard of the test chemical. A test chemical is classified as UN GHS Category 1 when both the 5% and 0.05% concentrations result in a cell viability smaller than or equal to (≤) 70%. Conversely, a chemical is predicted as UN GHS No Category when both 5% and 0.05% concentrations result in a cell viability higher than (>) 70%.
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