Clinical trial ads underperform not because eligible patients do not exist — but because the ads speak in researcher language to a patient audience. A patient searching “diabetes study paid” does not respond to “Phase II randomized controlled trial seeking participants.” They respond to “Living with diabetes in [city]? You may qualify for a paid research study.” The templates below give you the exact fill-in-the-blank structure for every format, with character counts and the rationale behind each choice.
The Core Framework: Answer 4 Questions in Order
Before a patient contacts your site, they need answers to four questions: (1) Is this for someone like me? (2) What will I actually have to do? (3) Is it safe? (4) What do I get out of it? Every ad format — search, social, email — answers these four questions, in this order, as concisely as possible. Ads that lead with question 3 or 4 before establishing relevance (question 1) consistently underperform.
Google Search Ad Templates
Headline 1 (30 chars max): “[Condition] Study — [City]”
Example: “Diabetes Study — Edmond OK”
Headline 2 (30 chars max): “See If You Qualify — Free”
Alternative: “Paid Research Study Near You”
Headline 3 (30 chars max): “IRB Approved | [X] Visits”
Example: “IRB Approved | 6 Visits”
Description 1 (90 chars max): “Adults [age range] with [condition] may qualify. No cost to participate. [X]-week study.”
Example: “Adults 30–70 with Type 2 diabetes may qualify. No cost to participate. 12-week study.”
Description 2 (90 chars max): “Compensation available. Schedule your free screening today — results in 2 minutes.”
Facebook/Instagram Ad Templates
Primary text — Opening line (visible without “See More,” 125 chars max):
“[Condition recognition question]? You may qualify for a paid research study in [city].”
Example: “Managing Type 2 diabetes in Oklahoma City? You may qualify for a paid research study.”
Primary text — Body (shown after “See More”):
“We are looking for adults [age range] who [plain-language eligibility]. [X] visits over [timeframe]. Compensation for time and travel. Free health monitoring included. IRB-approved study. You can stop participating at any time.”
Headline (bold text below image, 40 chars max):
“See If You Qualify — Takes 2 Minutes”
Description (30 chars max):
“No cost. Compensation available.”
Image guidance: A real person who looks like your target patient in an everyday setting. No stock medical imagery. No lab coats, pills, or stethoscopes. Test 3 different images with the same copy — image variation alone produces 2–3x difference in click-through rate.
Email Subject Line Templates (by Condition Category)
Use these for newsletter outreach, referral emails, or re-engagement sequences:
- Diabetes: “Are you managing Type 2 diabetes? There’s a paid study in [city] that may be right for you.”
- Hypertension: “Do you have high blood pressure? A local paid study is currently enrolling.”
- Depression/anxiety: “Struggling with depression in [city]? A local research study is accepting participants.”
- Respiratory: “Living with COPD or asthma? A paid study near you may help.”
- Generic re-engagement: “We haven’t heard from you — is [condition] research still something you’re considering?”
Retargeting Ad Template (For Website Visitors Who Did Not Inquire)
Retargeting ads reach a different audience than cold ads — patients who have already seen your site and did not act. They need a different message:
Primary text: “You visited our site recently. The [condition] study is still enrolling — spots are limited. See if you still qualify.” This message works because it acknowledges the prior visit (which creates relevance) and introduces honest scarcity (enrollment windows are real).
Your Ad Testing Plan
- Write 3 Google Search ad variations using the template above (change Headline 2 across the three)
- Write 3 Facebook ads with identical copy but 3 different images
- Run all variants simultaneously for 14 days with equal budget allocation
- After 14 days, pause the lowest-performing variant in each channel and reallocate its budget to the winner
- Repeat the process with a new variation each month