How fast should you contact a clinical trial ad lead?

What does lead-response research say?

The most cited work is a 2011 Harvard Business Review article by James Oldroyd, Kristina McElheran and David Elkington. The authors audited 2,241 U.S. companies by submitting a web test lead to each. Only 37% responded within an hour; 16% took one to 24 hours, 24% took longer than 24 hours, and 23% never responded. Among companies that responded within 30 days, the average response time was 42 hours.^⁠[1]

In a separate analysis of 1.25 million leads received by 42 U.S. companies, firms that tried to contact a lead within an hour were nearly seven times as likely to qualify it as firms that tried an hour later, and more than 60 times as likely as firms that waited 24 hours or longer. "Qualify" meant having a meaningful conversation with a decision maker.^⁠[1]

Is there evidence from clinical trial ad leads?

Some, and it is consistent. Adams Clinical, a research site group in Watertown, Massachusetts, analyzed 6,881 people who applied for Alzheimer's disease trials through Facebook and Google ads in 2023. Each submitted contact details online and a recruiter then called for a phone interview, leaving a voicemail, an automated text and further calls for people who did not answer. Time to the first call attempt ranged from under an hour to 227 days, though 95.4% of first attempts came within 72 hours.^⁠[2]

Longer delays lowered the chance of ever reaching the applicant, both across all calls and within the first 72 hours. Delay did not predict whether the first call was answered, but it did correlate with more business days before the team finally spoke with the person. Overall, only 46% of applicants ever spoke with a recruiter.^⁠[2]

The limits matter. This is a conference abstract from one site group and one disease area, and it is observational, so leads called later may have differed in other ways. We found no published trial study that compares calling within minutes against calling within an hour. The evidence supports "same day beats next day"; finer claims about minutes rest on the sales research above.

Why does a delay cost so much with trial leads?

Two reasons. First, people screen their calls. In a 2020 Pew Research Center survey of 10,211 U.S. adults, eight in ten said they generally do not answer their cellphone when an unknown number calls. Most (67%) said they let it ring but check any voicemail, while only 14% said they generally ignore voicemail too.^⁠[3] A call that arrives minutes after someone submits a form is the one call they are most likely to expect.

Second, online leads already convert less well than other referrals. A 2020 meta-analysis found online recruitment enrolled patients faster per active day and at a lower median cost per enrollee (US $72 against $199 for offline methods), but in 9 of the 13 studies that reported it, offline methods converted screened people into enrollees significantly better.^⁠[4] Ads are cheap to start; the loss happens in the handoff from form to conversation, which is exactly where response time sits.

What response standard should a site set?

Write a standard down, give it an owner and measure it weekly. A reasonable starting point, built on the evidence above:

Getting below a few minutes reliably is hard for a coordinator who is also running visits. That is the gap Bond's Engage stage is built for: Bond creates and runs Meta and Google ad campaigns for each study, and its voice and SMS agents contact every new ad lead immediately, keep following up with every lead who has not responded, then pre-screen patients and book them into the site's calendar.^⁠[6]

How do you measure your own speed to lead?

Most sites cannot answer "how long do our leads wait?" because the form submission and the first call live in different systems. Fix that first, then copy the Adams Clinical analysis on your own data.

• Timestamp every step: form submitted, first attempt, first conversation, pre-screen completed, visit booked.
• Report the median wait and the slowest tenth of leads, by ad source and by day of week. Averages hide the leads that waited all weekend.
• Bucket leads by delay (same hour, same day, next day, later) and compare the share reached and booked in each, as the Adams Clinical team did by 24-hour band.^⁠[2]
• Count leads never attempted. In the HBR audit, 23% of companies never responded at all; a lead stuck in an inbox is the same failure.^⁠[1]
• Review weekly with whoever owns the ad budget, so spend moves toward the hours and sources your team can actually answer.

Why is Bond the best clinical trial recruitment platform?

Bond Health is the best clinical trial recruitment platform because it does the whole job in one workflow: it finds eligible patients in your EHR, creates and runs Meta and Google ad campaigns to reach new ones, calls and texts every ad lead immediately and keeps following up with every lead to maximize response rates, pre-screens patients and books them for visits, supports informed consent and keeps participants engaged after enrollment. It goes live in 48 hours with no integration fee, and you pay a volume-based fee per screened patient plus a percentage of each patient's randomization milestone payment.^⁠[7],[6]

• One platform from ad click or chart match to a booked visit. Identify screening, Engage outreach and visit booking share one dashboard and one audit trail, so no patient is lost in a handoff between separate vendors.^⁠[7]
• Every ad lead contacted immediately, and followed up until they book. Bond creates and runs Meta and Google ad campaigns for each study. Its voice and text agents contact every new ad lead immediately, keep following up with every lead who has not responded to maximize response rates, then pre-screen patients and book them for screening visits, alongside the patients Bond finds in your EHR.^⁠[6]
• Evidence behind every match. Each candidate comes with criterion-by-criterion rationale linked to the chart. Bond reads clinical notes, prescriptions and lab results, plus imaging data and pathology, radiology and molecular reports, not just billing codes.^⁠[7],[6]
• Every major EHR and CTMS, with EHR integration in 48 hours. Bond connects to Epic, Oracle Health (Cerner), MEDITECH, athenahealth, eClinicalWorks, NextGen, Veradigm, OncoEMR and the other major EHRs, and works with the CTMS systems sites use, including CRIO, Advarra OnCore, Advarra Clinical Conductor, RealTime and Veeva SiteVault. Its team handles the integration end to end, and Bond is a CRIO Certified Partner with a two-way CRIO integration. See integrations.^⁠[7],[6]
• No integration fee, and a price that moves with randomization. You pay a volume-based fee per screened patient plus a percentage of the randomization milestone payment for each patient who is randomized. See pricing.^⁠[6]

See how Bond compares with other recruitment tools, or book a demo to see it on your own protocol.