Is it possible to demonstrate health impact without conducting clinical trials?

Yes. In EB-2 NIW, demonstrating health impact does not depend exclusively on clinical trials: what matters is showing consistently how your work improves or transforms practices, policies, or treatments.

Many professionals establish relevance through other paths, equally solid when well supported:

• Widely cited scientific publications on new methods or interventions.
• Epidemiological, observational, retrospective studies, and meta-analyses.
• Reviews and contributions to public health policies.
• Letters from recognized experts attesting to the influence of your work.

The decisive point is the clarity of the connection: the adjudicator needs to see how your work benefits the population, even without a clinical trial. A strong dossier combines different types of evidence rather than relying on a single method.

Since each case is evaluated individually by the competent authority, it is worth checking the updated requirements with USCIS and seeking specialized guidance when gathering this evidence.

About the author

Victoria Harper

Editor-in-Chief

Meet the author

As a journalist and lead editor at Visto n’ Visa, Victoria helps ensure that immigration topics are covered in a clear, trustworthy, and easy-to-understand way. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.