Ask any seasoned research site team about the toughest protocol criteria to enforce, and you’ll likely hear the same answer: the 30-day washout rule. This requirement — that a subject must not have participated in another trial within the past 30 days — is simple to state but nearly impossible to verify without the right tools.
Even when a Principal Investigator has known a patient or subject for years, there’s no reliable way to confirm their recent research history. Unfortunately, many participants are not forthcoming — sometimes unintentionally leaving out details, other times deliberately hiding recent trial involvement to qualify for additional studies. This creates a serious risk of enrolling duplicate or professional subjects in clinical trials, putting data integrity, subject safety, and trial outcomes at risk.
Filling the Critical Gap in Research History
This is where Verified Clinical Trials (VCT) steps in — a cross-sponsor, cross-therapeutic, real-time solution that no other system can match. VCT closes the gap in research history verification by providing accurate participant data at the moment of screening, ensuring protocol compliance from day one.
Created by research site professionals for research site professionals, VCT is a one-touch global research subject database designed for seamless use in busy site workflows. From day one, our focus has been on making duplicate subject detection easy, fast, and accurate — without adding unnecessary administrative burden.
Why Sites Love VCT
- Immediate screening protection – Detect duplicate and professional subjects in seconds at the point of enrollment.
- Continuous oversight – Protection doesn’t end at screening; VCT monitors subjects for the entire trial duration, including washout periods.
- Accurate and trusted – Built on real-world research site experience, with a user-friendly interface that integrates effortlessly into site operations.
- No other way to do this – Without VCT, there is simply no effective method to enforce critical inclusion/exclusion criteria related to recent trial participation.
From a research site’s perspective, VCT isn’t just a helpful add-on — it’s an essential safeguard. Our system gives sites confidence that they are enrolling the right participants, protecting the integrity of the study, and meeting regulatory requirements without guesswork or blind trust.
In short, Verified Clinical Trials is invaluable for maintaining trial quality and ensuring that the 30-day washout rule is more than just a line in the protocol — it’s a standard that can be reliably upheld.