Patient recruitment

Social media recruitment for research sites: a practical guide

By TrialNotice · Updated
Woman on a living room couch scrolling a health related post on her phone
Short answerSocial media recruitment can reach patients at low cost per enrollee, but it works best for common conditions with simple criteria. Since January 2025, Meta restricts advertisers it classifies as health and wellness from optimizing for lower funnel events like form submissions, so campaigns optimize for upper funnel signals instead. Ads need IRB approval, and results should be judged on randomized patients, not clicks.

Does social media recruitment work?

It can be cost effective. A meta analysis found online recruitment cost $72 per enrollee versus $199 for offline methods, though offline methods converted better in 69% of studies that compared conversion (JMIR). 22% of trial participants learned about their trial online (CISCRP via Citeline).

What changed on Meta in 2025?

Starting January 2025, Meta began restricting data sharing for advertisers it classifies in health categories. Restricted advertisers lose the ability to optimize campaigns for mid and lower funnel events, and some custom conversion events are blocked; advertisers are advised to shift toward upper funnel events (Cardinal Digital Marketing). In practice, the platform optimizes for clicks and landing page views rather than completed prescreeners.

What works now?

  1. Simple, clear creative about the condition, location, and what participation involves.
  2. A short prescreener on your own site, measured in your own system.
  3. Fast follow up: call responders the same day.
  4. Your own tracking from click to randomization, since the platform can no longer see it.

What do IRBs require?

Ads for prospective subjects are recruitment materials that the IRB reviews (FDA). Build approval time into your launch plan, and avoid claims of safety, effectiveness, or free treatment beyond what the IRB approves.

How should you measure results?

By cost per randomized patient. Social leads often fail screening on criteria they cannot judge themselves; the industry average screen failure rate is already 36.3% (Tufts CSDD). For protocols that hinge on a diagnosis, labs, or treatment history, physician referrals usually convert better. See physicians or patients: which to market to.

Get your study in front of the right local physicians

TrialNotice builds a physician referral pipeline around one active study. We identify relevant local physicians within driving distance of your site, send study aligned direct mail, follow up by email and LinkedIn, track engagement with recipient level QR codes, and route warm responses into your site team's workflow.

Talk to TrialNotice

Sources

  1. Brøgger Mikkelsen M. et al., "Online Patient Recruitment in Clinical Trials: Systematic Review and Meta Analysis," Journal of Medical Internet Research
  2. Cardinal Digital Marketing, "How Meta's Data Restrictions Impact Healthcare Advertising Strategies"
  3. FDA, "Recruiting Study Subjects" guidance for IRBs and clinical investigators
  4. Citeline, Patient Recruitment Pulse (Jan 2026) on the CISCRP 2025 Perceptions and Insights Study
  5. Applied Clinical Trials, "Can Recruitment and Retention Get Any Worse?" (Tufts CSDD screen failure study)

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