CADTH's Grey Matters resource is a free online tool for finding health-related grey literature that are not published commercially and which may be inaccessible via bibliographic databases. To read more on Grey Matters, go to About Grey Matters. 

Grey Matters is an open access tool and may be used for non-commercial purposes, provided that attribution is given to CADTH, including a citation such as the one that follows.

Cite as: Grey matters: A tool for searching health-related grey literature. Ottawa: CADTH; 2022. https://greymatters.cadth.ca. Accessed yyyy-mm-dd.

Grey Matters Lite, a shortlist of the Grey Matters tool, is available under the Other Resources tab.

  • To print selected categories or records, click on the Print/Copy icon Print / Copy
  • To save selected categories or records into a Word file, click on the Print/Copy icon, select all of the text, copy the selected text, paste it to a Word file, and click Save
  • The URL links will be active
  • To save selected categories or records as a PDF file, click on the PDF icon PDF

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Contact us at requests@cadth.ca for any questions about this site.