The WHO Model List of Essential In Vitro Diagnostics (EDL) is an evidence-based resource that provides information—such as assay format, test purpose, and specimen type—on essential in vitro diagnostics (IVDs). It has been developed to help prioritize IVDs that should be available at each level of the healthcare system.

The EDL serves as a reference for the development or updating of national lists of IVD tests. National essential IVD lists are expected to raise awareness and political commitment, guide procurement and regulatory policies, and facilitate access to affordable IVDs—particularly in low-resource countries—by prioritizing the most important IVDs that all countries should make available to their populations. This, in turn, contributes to improved access to essential IVD tests, strengthens health systems, and supports the realization of Universal Health Coverage.

The review of the EDL is an evidence-based, collaborative and transparent process. The list is updated periodically through a call for submissions of applications and internal review. The EDL secretariat oversees the process, and the Strategic Advisor Group of Experts on IVDs (SAGE IVD) is responsible for reviewing the applications and making recommendations.

More information on the EDL and the SAGE IVD are available here.

For questions, feedback, suggestions, or to report errors or bugs, please contact us at EDLsecretariat@who.int