Your enrollment target, met. Or your money back.
Clinical Enroll delivers randomized patients to qualifying research sites, with a contractual commitment no other recruitment agency offers. Most Phase II-III studies qualify.
Patients randomized
Indications
$577
Lowest cost per patient
The enrollment guarantee
At least one randomized patient per qualifying study
Pre-screened referrals only — no unqualified leads reaching your coordinator
If we miss the target: one free re-run campaign. If the re-run also misses: full refund.
Written into the engagement agreement before any campaign begins. No commitment required to receive a feasibility evaluation.
Research Sponsors
·60+ patients randomized
Research Sponsors
60+ patients randomized
Most recruitment vendors bill for the work. You pay whether patients enroll or not.
The standard model in clinical trial recruitment is effort-based. Vendors run campaigns, report on impressions and referrals, and invoice at month's end. When a study misses enrollment, the site absorbs the cost: financially, reputationally, and operationally.
Clinical Enroll was built on a different premise. Your enrollment number is the only outcome that matters. Every campaign we run is structured around it. Every guarantee we offer is tied to it.
TRADITIONAL MODEL
CLINICAL ENROLL
Built around one outcome: patients randomized.
STEP 01
Protocol Feasibility Evaluation
Before we accept any engagement, we evaluate your protocol. We model your patient pool, eligibility criteria complexity, and per-site enrollment targets against our recruitment data. If the math supports a guarantee, we commit in writing. If it doesn't, we tell you that before you spend anything.
STEP 02
IRB-Ready Campaign Development
We build patient outreach campaigns across digital and community channels. Every campaign is developed for IRB review and deployed in accordance with FDA guidance on clinical trial advertising. Patients are pre-screened via a condition-specific questionnaire before any referral reaches your coordinator.
STEP 03
Enrollment Delivered, or Refunded
We track every lead from first contact through randomization. For qualifying studies: if we miss the contracted target, we run a second campaign at no charge. If that also misses, you receive a full refund. No partial credits. No retained fees.
Guaranteed enrollment, in practice.
Each campaign below was delivered to a qualifying research site. Results are site-level, not aggregate.
Results shown are actual outcomes from completed campaigns. Our contractual guarantee is a minimum of one randomized patient per qualifying engagement — campaigns frequently exceed that floor. The average per-patient site fee for a Phase II-III study ranges from $3,000 to $15,000 depending on indication.
Not a tagline. A contractual commitment.
“Guaranteed enrollment” is easy to say. Here is what it means in practice at Clinical Enroll.
For studies that pass our feasibility evaluation, we commit to delivering the contracted enrollment target. If we miss it, we run a second campaign at no charge. If the re-run also falls short, you receive a full refund.
We do not guarantee every study. Rare diseases, oncology protocols, studies requiring documented disease progression, and protocols with extreme biomarker or prior-treatment requirements do not meet our feasibility threshold. We tell you that upfront, before you commit budget, because a guarantee we cannot keep is not a guarantee.
When we give you the guarantee, it is because we are confident we can deliver it.
Commitment summary
What we guarantee
A minimum of one randomized patient per qualifying study. If we miss: one free re-run. If the re-run misses: full refund. No partial credits, no retained fees.
What doesn't qualify
Rare diseases, oncology requiring confirmed pathology, extreme biomarker specificity. We tell you this before you spend anything.
How you find out
Free feasibility evaluation within 24-48 hours. No sales call required to get a clear answer.
Built for the research sites the standard model was failing.
Clinical research sites are understaffed, underpaid relative to their coordination burden, and routinely burned by vendors who bill for activity rather than results. Coordinators pre-screen referrals that fail basic eligibility. Studies slip timelines while invoices arrive on schedule.
Clinical Enroll works the opposite way. Feasibility first. Pre-screened referrals only. An outcome guaranteed or a fee returned. If your study qualifies, working with us carries no financial risk. That is by design.
Feasibility before commitment
We evaluate your protocol before accepting any engagement. If the data doesn't support a guarantee, we tell you before you spend a dollar.
Pre-screened referrals only
Every patient referral passes a condition-specific pre-screen before reaching your coordinator. Your team reviews qualified candidates, not raw leads.
No financial risk for qualifying studies
If your study qualifies for the guarantee, the financial exposure sits with us. Re-run at no charge if the target is missed. Full refund if the re-run falls short.
Find out if your study qualifies. No commitment required.
Submit an NCT number or a link to the inclusion criteria. We complete the feasibility evaluation within 24-48 hours and tell you whether your study qualifies for our enrollment guarantee, a best-effort campaign, or neither.
Check if your study qualifiesNo sales call required to receive your feasibility assessment.