Eyes on Research

Improving Diversity in Clinical Trials With Mobile Clinics

Written by 20/20 Onsite | Dec 3, 2025 7:00:29 PM

Why Diversity in Clinical Trials Remains a Critical Gap

Diversity in clinical trials is vital to ensure treatments are safe for everyone. Clinical trial participants come from all backgrounds, including different sexes, races, and ages.

Including diverse populations in clinical research ensures that the treatment being tested will be effective. Ethnicity and other factors can affect how well a medication works or how quickly a treatment produces results.

Other reasons diversity matters in clinical trials include:

  • Generalizability: Before being certain that the treatment being assessed will work in the general population, it needs to be tested. This must take place on a sample of people that accurately represents that population.
  • Improved Accuracy: Using only narrow demographics in clinical studies will not offer an accurate idea of how the treatment will work in the real world.
  • Greater Patient Trust: Underrepresented populations struggle to trust the healthcare system, and historical factors contribute to this mistrust. If underrepresented communities don’t see themselves included in clinical trials, they can continue to fear the treatments. 
  • Enhanced Health Equity: Diverse clinical studies help meet health equity requirements. Health equity refers to the right everyone has to attain their highest level of health. It requires recognizing that every population group should be viewed equally. The problem is that certain demographics may face barriers when accessing medical care.

Diversity in clinical trials also addresses a recent push from the U.S. Food and Drug Administration (FDA). It seeks to run studies that reflect the country’s population. When presenting a new drug, for example, the FDA used to require a “Race and Ethnicity Diversity Plan.” This plan is necessary early in the medication’s development process. There are questions about whether this requirement will still apply after a recent court order. The reasons behind the FDA recommendations are still relevant, however. The FDA expects to see the enrollment of underrepresented populations in clinical studies.

The Barriers That Limit Diverse Participation

Inherent barriers may prevent some patient populations from participating in clinical trials: 

  • Accessibility: Study designs don’t always account for the fact that location can prevent some ethnic minorities from participating. The cost of transportation to the trials could place an undue strain on these populations. Other costs include childcare services and time off from work. That may not be feasible in lower-income communities, blocking the population from even considering participation. Finding ways of lowering these burdens is one of the best options for improving clinical trial diversity.
  • Historical Mistrust: Over the decades, minority populations have experienced discrimination and mistreatment from the medical community. Community outreach is necessary to address the lack of trust in the medical establishment. Providing information about the studies and discussing the guardrails in place to keep everyone safe is vital. These simple steps can increase interest and trust in the studies.
  • Communication Challenges: Language barriers could prevent people from knowing that the studies are taking place or from understanding how to enroll. 

Eligibility criteria could also prevent minority groups from participating. Often, clinical trials require that participants have no comorbidities. This could rule out many willing people. Hispanic and African American communities, for example, tend to experience higher instances of chronic diseases like diabetes. In a study for kidney disease, for example, an additional medical condition could exclude them from studies.

How Mobile Clinics Bring Research Directly to Diverse Communities

Mobile clinics, such as Mobile Vision Clinics, offer more people the opportunity to participate in clinical trials. 

  • Traveling to Participants: They can go into neighborhoods where potential participants live that lack traditional clinical sites. If the community sees this type of effort being made on their behalf, they might inquire about the trial. That can lead to a willingness to participate.
  • Reducing Burdens on Participants: It may be easier for participants to find adequate childcare or continue their typical work schedule if the trial site is in their neighborhood.
  • Greater Access for Those With Mobility Challenges: People with mobility issues often can’t rely on public transportation. They might not be able to travel for several hours to a trial location. It can be much easier for them to participate via mobile clinics.

Additionally, mobile clinics can help support community health services. This helps build trust and address inequities while also providing information about clinical studies.

Operational Advantages of Mobile Clinics for Diversity-Focused Studies

Expanding Reach Beyond Traditional Trial Sites

Traditional trial sites are often located in higher-resourced or urban areas, which can be harder to reach for people facing transportation or financial barriers. Mobile clinics make it easier to include participants from a wider range of communities, including those in rural areas or experiencing unstable housing or frequent moves.

They can also offer services in familiar locations, like community centers, attracting people who may not have otherwise considered participating. 

Participant-Friendly Workflow

With mobile clinics, it’s easier to schedule visits around participants’ work and family responsibilities, opening the door for people who might otherwise assume they can’t take part. 

When staff are trained to work effectively with participants from different backgrounds, they can better support patients, address cultural considerations, and build trust—helping trials feel more accessible, respectful, and reflective of the communities they’re designed to serve.

Improving Enrollment and Retention

Mobile clinics reduce patient burden, resulting in patients staying in trials longer. Underrepresented groups can struggle to participate in long clinical trials due to the financial and logistical challenges they can pose. By making these initiatives easy to access, retention improves.

FDA Momentum and Expectations Around Diversity

Increasing diversity has long been a focus of the FDA in drug trials and other clinical studies. The Consolidated Appropriations Act of 2023 began to require sponsors of trials to submit detailed Diversity Action Plans. Typically, these plans are necessary during phase 3 trials and specific medical device investigations.

The FDA is seeking greater enrollment of subgroups, including Hispanic, African American/Black, and Asian communities, across the country.

By presenting Diversity Action Plans during the trial's development, it’s easier to decide on the best locations for the trial. Many other details can be addressed early on that could encourage community engagement from underrepresented groups.

Convenience-enhancing options, such as mobile clinics, are one way to address what the FDA is now focused on.

What Increased Diversity Means for Medical Outcomes

A lack of diversity in clinical trials can make it harder to develop treatments that work for everyone, putting untested demographics at risk of side effects and potentially leading to worse health outcomes.

Getting stronger metrics on how interventions impact diverse groups of people makes medical research safer for everyone.

How 20/20 Onsite Supports Diversity Through Mobile Trial Services

At 20/20 Onsite, we offer mobile clinical trial services that help reduce health disparities by making participation easier for everyone. Our certified clinical staff and our standardized workflow make it easier to collect high-quality data while offering all the clinical trial resources you need.

Because our services are focused on patients, we provide the point-of-need support that can make retention easier. In fact, our clinical trial solutions have been shown to increase patient retention from 70% to 91%. We do this by providing point-of-need care that is convenient, quick, streamlined, and patient-centric.

Ready to Expand Access and Improve Representation?

If you’re at the planning stages of clinical research, increasing patient diversity can be much easier with help from 20/20 Onsite.

How can we help? We can bring your studies right to your point of need through our mobile trial services. If your research is in jeopardy due to FDA mandates, we also offer clinical trial rescue services to help you navigate any delays.

We’re ready to assist you in finding the right point-of-need deployment option for any of your upcoming studies. With a virtual tour, you can get a better sense of how we can help. 

Schedule a consultation with the team at 20/20 Onsite.