The OECD Guidance Document on Current Approaches in the Statistical Analysis of Ecotoxicity Data: A guidance to application, No. 54 and its accompanying Annex published in 2006, provides guidance for the statistical evaluation and interpretation of ecotoxicity data generated under OECD Test Guidelines and supports harmonised approaches to data evaluation and regulatory decision making. The current revision aims to reflect methodological developments and practical experience gained since the document was first published.
First commenting round on the draft revised OECD Guidance Document No. 54 on the Statistical Analysis of Ecotoxicity Data
- Submission period
- 2 November - 14 December 2026
Background public consultation
Project description
The revision includes clarification of existing approaches, updated guidance on concentration response modelling, additional recommendations for the analysis of count data and consideration of contemporary statistical methods used in ecotoxicity testing. The revision also aims to improve the accessibility and practical application of the guidance while supporting greater consistency and harmonisation in the interpretation of ecotoxicity study results.
How to contribute
The draft revised OECD Guidance Document No. 54 and its accompanying Annex are currently under a first commenting round by the Working Party of the National Coordinators of the Test Guidelines Programme and open for comments from the public at the same time.
Interested parties are invited to contact their National Coordinators at least one week before 7 December 2026.
