Detecting and preventing protocol violations before they ever happen.
In today’s complex clinical trial landscape, one issue continues to fly under the radar—duplicate research subjects and professional research subjects. These individuals enroll in multiple trials simultaneously or too close together, often crossing therapeutic areas, sponsors, and trial phases.
Left unchecked, these subjects introduce significant risk to safety, data integrity, and trial budgets.
At Verified Clinical Trials (VCT), we offer the industry’s only cross-sponsor, cross-study protection that proactively prevents these risks at the time of screening—before any study procedures are initiated. This real-time prevention saves time, money, and regulatory headache for sponsors, CROs, and research sites alike.
The Hidden Financial Impact of Duplicate Research Subjects
Let’s look at what’s at stake when a duplicate subject or professional research subject is enrolled:
- Screening Costs: Informed consent, site resources, clinical and lab evaluations.
- Study Drug Supply: Expensive investigational products often shipped and administered before duplication is detected.
- Randomization & Dosing: Increases exposure risks and compounds downstream costs.
- Monitoring, Labs & Imaging: Ongoing site visits, safety labs, and imaging fees quickly escalate.
- Re-screening/Re-enrollment: Finding replacement participants and restarting processes wastes time and inflates budgets.
These hidden costs—often invisible until much later—can drain resources and threaten overall trial success.
Why Other Solutions Fall Short
Most available tools are too little, too late. They typically detect issues after a subject has already been enrolled or dosed—and even then, only within the same protocol. They lack the ability to look across sponsors, indications, or study phases.
Verified Clinical Trials is the only solution with true cross-sponsor, cross-therapeutic protections. Our extensive research subject database detects duplicate research subjects across all major therapeutic areas and all phases of research—from Phase I to Phase IV.
Other tools may catch a fraction of duplicate subjects, but only within isolated studies or within the same sponsor. That leaves gaps where professional subjects can easily slip through.
This is what sets Verified Clinical Trials apart.
A Purpose-Built Solution to Safeguard Your Trials
- Instant alerts at screening before any study activity begins
- Optional biometric verification (fingerprint & facial recognition) to prevent identity misuse
- Global coverage across 40+ countries
- Integration with leading Phase I units, where duplicate risks are often highest
- Cross-indication insight—because research participants don’t stay in one lane
In trials involving CNS, obesity, diabetes, vaccines, oncology, and more, duplicate subject risk is real—and increasing. With limited patient pools and overlapping protocols, the industry must take steps to proactively protect subject eligibility and trial validity.
The Verified Clinical Trials Advantage
By using VCT, sponsors avoid:
- Failed endpoints due to poor-quality subjects
- Regulatory risk due to undetected protocol violations
- Costly re-work and rescreening
- Lost time and diminished data reliability
Verified Clinical Trials is not just a tool—it’s an essential safeguard for modern clinical trials. We fill a critical industry gap with the only global, cross-sponsor, cross-therapeutic research subject database purpose-built to detect and prevent duplicate research subjects in clinical trials.
👉 Learn more about how VCT protects your trial from hidden risks
Supporting Evidence
The challenges posed by duplicate and professional research subjects are well-documented. For instance, a study published in Contemporary Clinical Trials Communications highlights strategies to identify and exclude subjects who conceal or fabricate information to enroll in multiple studies. The study emphasizes the importance of registries and databases in mitigating these risks. You can read the full article here: Strategies to exclude subjects who conceal and fabricate information to qualify for clinical trials.
