NIH Intramural Research Program

Lapse in Government Funding
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov. Updates regarding government operating status and resumption of normal operations can be found at opm.gov.
Research in Action: No Tech? No Problem
NIH IDEAS Lab inventions enable otherwise impossible research.
Enter the Lab
Four NIH Researchers Elected to National Academy of Sciences
Four scientists from NIH's Intramural Research Program were elected to the National Academy of Sciences (NAS) in April 2025 in recognition of their momentous scientific achievements.
Meet the honorees
SciBites video shorts
IRP postbaccalaureate fellow Yonathan Assefa is examining how a neurological disease affects muscles and nerves.
Satisfy Your Appetite
Speaking of Science Podcast
Hear conversations with world-leading researchers working at the NIH IRP on challenges across the spectrum of biomedicine.

Listen in

Welcome to the IRP

The Intramural Research Program (IRP) is the internal research program of the National Institutes of Health (NIH), known for its synergistic approach to biomedical science. We invite you to explore the possibilities.

Research in Action

Learn about our researchers, their goals, achievements, inspirational moments, and most of all, why they are passionate about the research they do here.

Kaitlyn Sadtler experiments with biomaterials to boost the body’s ability to regenerate.

View Story
NIH IDEAS Lab inventions enable otherwise impossible research.

View Story
Jesus Valenzuela dissects how our bodies react to insect bites.

View Story
Lorenzo Leggio seizes new opportunities to develop treatments for substance use disorders.

View Story
Swee Lay Thein is hunting for new ways to help patients with deformed red blood cells.

View Story