Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Grey Literature and Other Sources: Clinical guidelines

An overview of key search strategies to locate grey literature, informal or unpublished material. Provides sources and instructions on reporting requirements for systematic reviews.

Clinical guidelines title banner

Why search for clinical guidelines?

Clinical guidelines can also be a source of studies. In relation to the hierarchy of evidence, clinical guidelines provide high quality summaries of information. They are systematically developed to assist health professionals make clinical decisions about appropriate health care.

Authors of clinical guidelines have appraised existing research in order to translate the evidence into actionable recommendations.

A few key sites are listed below. Use a search engine to explore further.

Clinical guidelines


Guidelines and standards

'Specify all databases, registers, websites, organisations, reference lists, and other sources searched or consulted to identify studies. Specify the date when each source was last searched or consulted' - PRISMA 2020 Explanation and Elaboration, p. 5

Hierarchy of evidence