A clinical research industry blog

Understanding the FSP Model in Clinical Research — What It Is and Why It Matters

Written by Kelly Costin, Program Manager | 2/12/26 1:00 PM

Clinical development is evolving at a pace that challenges traditional outsourcing models. As pipelines expand and trial designs grow more complex, Sponsors are looking for ways to stay nimble without sacrificing quality or control. This shift has propelled the Functional Service Provider (FSP) model into the spotlight. More than just another outsourcing option, the FSP approach offers a flexible, scalable way to access specialized expertise while maintaining strategic oversight.

 

 

 

This first article in our three‑part series explores what the FSP model is, how it works, and why it has become such a compelling choice for modern clinical teams.

What Is the FSP Model in Clinical Research?

At its core, the FSP model is a role‑based outsourcing strategy. Instead of handing an entire clinical trial to a single CRO, Sponsors contract a provider to supply dedicated functional resources — for example, clinical operations staff, data managers, statisticians, or medical writers. These individuals often work directly within the Sponsor’s systems and processes, becoming an extension of the internal team.


Unlike project‑based outsourcing, FSP partnerships are typically long‑term. They support multiple studies or even entire portfolios, allowing teams to build familiarity with the Sponsor’s therapeutic areas, expectations, and ways of working. Over time, this creates a level of continuity that is difficult to achieve in traditional outsourcing models.

How the FSP Model Works

An FSP engagement is designed to integrate seamlessly into a Sponsor’s operational framework. Resources are embedded into existing teams, using the same SOPs, tools, and workflows. This alignment reduces onboarding time and ensures that work is carried out consistently across studies.


Because the model is role‑based rather than project‑based, it also allows for a more stable and predictable working relationship. FSP staff remain with the Sponsor across multiple programs, building institutional knowledge and strengthening cross‑functional collaboration. The result is a partnership that feels less like outsourcing and more like a natural extension of the Sponsor’s internal capabilities.

Why the FSP Model Is Gaining Momentum

The rise of the FSP model reflects a broader shift in how Sponsors think about resourcing. Clinical development today demands agility — the ability to scale quickly, adapt to shifting timelines, and access specialized expertise on demand. The FSP model supports all of this without requiring Sponsors to relinquish operational control.


Sponsors appreciate the ability to adjust staffing as studies progress, pause, or expand. They value the cost transparency that comes with paying for specific roles rather than bundled services. And they benefit from having dedicated experts who understand their systems, their science, and their expectations.


In an environment where efficiency and quality must coexist, the FSP model offers a balanced, sustainable approach.

Conclusion

The Functional Service Provider model has become a cornerstone of modern clinical outsourcing because it delivers what today’s Sponsors need most: flexibility, expertise, and control. As the industry continues to evolve, the FSP approach provides a foundation for more efficient, scalable, and resilient clinical operations.