A market full of willing patients can still miss enrollment. Here is the gap, and what closes it.
Your market is full of interested patients. But that has never been the hard part.
The real question is how many can actually reach a site, and most recruitment plans assume the answer instead of testing it.
Availability Is Not The Same As Accessibility
Two numbers decide a recruitment forecast, and they are not the same:
- Availability: how many patients exist in a market.
- Accessibility: how many can move from interest to a site-ready, eligible referral.
The Interest Was Real. The Pathway Was Not.
A lung cancer market feasibility test made the gap measurable:
- 32% expressed strong interest in participating.
- 25% had never had the clinician-ordered biomarker test the protocol required.
A digital form only records the patient response, but it cannot confirm whether a patient has completed a protocol-critical step or can take the next one.

Close the Gap Before You Scale
83bar’s patient activation model adds the step a digital funnel misses: human validation after the click. Through its clinical contact center, an experienced, embedded team:
- Confirms the protocol-critical steps the study requires.
- Surfaces the real-world barriers a form hides.
- Delivers site-ready referrals, filtering out patients who cannot qualify before a site or budget absorbs the cost.
Stop scaling recruitment against a number that only measures interest.
Talk to 83bar about validating accessibility before your next study launches.

