NAMs, or New Approach Methodologies, is a term defined by the Interagency Coordinating Committee on the Validation of Alternative Methods (ICCVAM). ICCVAM is a federal committee under the U.S. Department of Health and Human Services (HHS) and coordinated by the National Institutes of Health (NIH):
The formal definition was originally emphasized by current NIH leadership during their oversight of the Interagency Coordinating Committee on the Validation of Alternative Methods (ICCVAM) which describes 鈥渁ny technology, methodology, approach, or combination thereof that can be used to provide information on chemical hazard and risk assessment that replaces, reduces, or refines the use of animals.鈥 Our broader interpretation remains compatible with that definition, while expanding its application to include any approach that advances scientific understanding, including in fields such as biomedical research, drug development, and safety assessment, in a way that replaces, reduces, or refines the use of animals.
But depending on who you鈥檙e talking to, NAMs can also refer to:
Novel Alternative Methodologies
Non-Animal Models (which are a subset of NAMs, falling under the Replacement principle of the 3Rs)
Across all interpretations, the focus is clear: NAMs are tools and strategies that support innovation, improve translational science, and reduce reliance on animals.
NAMs are not new. You鈥檙e probably already doing a lot.
Let鈥檚 Move Progress Forward Together
You may have noticed that some recent Notices of Funding Opportunities (NOFOs) now reference non-animal models or New Approach Methodologies (NAMs). This does not mean that proposals must include NAMs or exclude animal research.
In fact, proposals may fall into any of the following categories:
- Animal research only
- Animal research combined with NAMs
- NAMs-only approaches
What鈥檚 changing is the scope of the NOFO, not the requirement for each individual grant.
Previously, many NOFOs were written to support only animal-based models.
The new language reflects a broader, more inclusive framework encouraging innovation across the 3Rs: Replacement, Reduction, and Refinement.
Wondering What鈥檚 Going on With NAMs?
You鈥檙e not alone. With NAMs in the spotlight鈥攆eatured in federal initiatives, public discussions, and policy shifts鈥攊t鈥檚 natural to have questions:
What exactly counts as a NAM?
鈥 How are NAMs being used in research right now?
鈥 How do NAMs fit into the 3Rs (Replacement, Reduction, Refinement)?
鈥 And what do they mean for the future of biomedical science?
This space is designed to help.
Here, we鈥檒l share:
鉁 Trusted definitions and updates
馃敩 Examples of how NAMs are already in use
馃摎 Resources to explore
馃Л Opportunities for innovation
馃敩 Ways we鈥檙e already making progress

The Bottom Line?
We are proud of our ongoing efforts to advance ethical, high-quality science鈥攁nd we鈥檙e committed to continual progress. NAMs aren鈥檛 just future concepts. They鈥檙e active tools in today鈥檚 research landscape, helping us move toward more humane, predictive, and innovative science.
Stay tuned for more updates and examples. Let鈥檚 explore NAMs together.
Calling All 3Rs Innovators
Are you advancing Replacement, Reduction, or Refinement in your research?
Whether you’re:
- Developing a non-animal model (Replacement)
- Designing studies that use fewer animals more effectively (Reduction)
- Enhancing animal welfare through improved procedures or technology (Refinement)
We want to hear from you!
Contact aco3rs@uw.edu.
Feature Your Work
We鈥檙e building a showcase of real-world 3Rs innovation, and we鈥檇 love to highlight your project. Share how your research is driving ethical, efficient, and forward-thinking science. From early-stage pilots to published programs, we welcome a wide range of work.
Need Help Framing the 3Rs in Your Proposal?
Describing the 3Rs and NAMs clearly in grants, protocols, or outreach can be challenging. We can help you:
- Identify how your work supports the 3Rs.
- Use trusted definitions and ICCVAM-aligned language.
- Connect your project to emerging trends and expectations.
- Reach out today to collaborate, get feedback, or be featured.
Not Sure if Your Work Qualifies as a NAM?
We can help.
You may already be doing things that count. We鈥檙e here to support you in describing, framing, and highlighting those efforts.
Reach out to us if you’d like help aligning your proposal with current language or showcasing your innovative approach.

3Rs Certificate Course
This fully virtual, self-paced training is designed to elevate understanding and application of the 3Rs鈥擱eplacement, Reduction, and Refinement鈥攁cross your organization.
Related Links
(July 18, 2025)
(July 10, 2025)
(July 7, 2025)
Letter to NIH/FDA聽(July 14,2025)
(April 29, 2025)
Driving Progress Through the 3Rs and NAMs
