Research studies are looking for people like you.
Thousands of studies across the United States are enrolling right now, and most people never hear about the ones they could join. We keep track of which are open, check your answers against their published criteria, and tell you which research site to contact.
One study, and the call is yours.
- We read the criteria so you do not have to
- Study listings are written for clinicians. We translate what each protocol actually requires — diagnosis, age range, current medication, distance to the site — and compare it against what you tell us.
- Your details stay with us
- When there is a plausible match, we tell you the study and how to reach the research site running it. Your answers are not sent to the site, to a list of buyers or to a lead exchange. If there is no match, we say so.
- Texts come from Ridgeline only
- Every study update is sent by Ridgeline Clinical Research to people who asked for them. A text never enrolls you in a study, and we do not sell, rent or share your number or your consent.
Where studies are enrolling now
These are the areas we currently accept applications for. Listings move week to week as studies open, pause, or close. Hover or focus a row to see where that area is running.
Heart and circulation
Blood pressure that stays high on treatment, heart failure, irregular rhythm, and cholesterol that has not responded to standard therapy.
Diabetes and metabolic health
Type 2 diabetes, insulin resistance, obesity with a related diagnosis, and fatty liver disease confirmed by imaging or biopsy.
Brain and nervous system
Migraine with or without aura, early memory change, Parkinson's disease, and nerve pain that follows diabetes or shingles.
Lungs and breathing
COPD, asthma that flares despite an inhaler, chronic cough lasting more than eight weeks, and sleep-related breathing problems.
Skin and immune conditions
Atopic dermatitis, plaque psoriasis, chronic hives, and rheumatoid arthritis in adults already taking a first-line drug.
Women's health
Endometriosis, heavy menstrual bleeding, symptoms around menopause, and recurrent urinary tract infection.
Six areas, and the list moves every week. Ten minutes now beats finding out a study closed last month.
Sign up for study updatesMeeting the criteria is not the same as being enrolled
Final eligibility is decided by the research site after a screening visit, and a study can close enrollment without notice. Nothing on this page is a promise that you will qualify for anything.
Four steps, and we leave after the third
The first three are ours. The fourth belongs to the research site, and everything that follows it — consent, screening, the decision to enroll — happens between you and the study team.
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You complete the intake form
Your condition, current medications, and where you live. We do not ask about insurance, and we never ask for payment details at any stage.
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We compare your answers against open studies
This is a comparison against published criteria, not a medical assessment. Nobody on our staff reviews your case clinically, and we do not diagnose.
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We tell you which study fits
One study and its research site, chosen by fit and distance, with the site's contact details. If you asked for text messages, the first one goes out at this point.
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You contact the site to arrange screening
From here it is between you and the study team: you get in touch, and they handle informed consent, the screening visit, and the decision about whether you can enroll. We do not send them your answers.
Nothing is sent until you submit the final step, and you can stop at any point along the way.
Sign up for study updatesWhat a study actually asks of you
Every protocol is different, and the study team walks you through the specifics before you agree to anything. In general terms:
- Time
- Several visits to the research site over weeks or months, with phone or app check-ins between them. The first visit is usually the longest.
- Cost
- Study-related care is provided at no charge. Costs outside the protocol, such as travel or parking, may or may not be reimbursed depending on the study.
- Compensation
- Many studies pay participants for time and travel. The research site sets the amount and tells you before you consent. We never quote a figure first.
- Leaving
- Participation is voluntary. You can withdraw at any point, without giving a reason, and without any effect on the medical care you receive elsewhere.
Ridgeline is not a medical provider
Nothing on this site is medical advice, and nothing here should be used to start, stop, or change a treatment. Talk to your own clinician before making any decision about your health. If your symptoms are urgent, call 911 or go to an emergency department.
What applicants say about the process
Published with each writer's permission. They describe how their application was handled, not how a study affected their health.
I filled out the form on a Sunday night and had an email from Ridgeline on Tuesday naming the study and the site to call. They told me upfront I might not qualify, which I appreciated. Nobody pushed me to sign anything.
They explained what the screening visit involved before I agreed to anything, and the decision to call the site was mine. I would rather have it that way.
I asked them to delete my information after I decided not to go ahead. They confirmed it by email the same week, and I have not been contacted since. That is not what I expected, honestly.
These comments describe individual experiences of our service. They are not statements about the safety or effectiveness of any study, treatment, or investigational product, and nothing here predicts what will happen in your case. No one was paid or compensated for them.
The things people actually ask
Does this cost anything?
No. You are never charged for anything, and we never ask for payment details, insurance information or a card at any stage.
Is applying the same as joining a study?
No. The intake form is an inquiry and nothing more. Enrollment happens later, at the research site, after you read and sign an informed consent document and a study doctor confirms you meet the criteria.
What happens to my information?
It stays with Ridgeline. We use it to find a study that fits and to tell you how to reach the research site running it. We do not send it to research sites, sell or rent it, or pass it to advertisers or marketing affiliates. You can ask us to delete it at any time.
What if nothing matches right now?
We tell you plainly. You can ask us to hold your details for future studies in the same area, or ask us to erase them. We do whichever you choose, and we do not keep contacting you in the meantime.
Do I need health insurance to take part?
Most studies do not require it. Study-related care is provided at no charge to participants. We do not ask about coverage anywhere in the intake.
Will I be paid?
Some studies compensate participants for time and travel. The amount is set by the research site, not by us, and we never quote a figure before the site has.
If that answered what you wanted to know, the intake takes about six minutes.
Sign up for study updatesWho is behind this
Ridgeline Clinical Research was set up in 2023 by two people who had spent the previous decade doing patient recruitment inside contract research organizations, where they watched applicants get passed between four or five buyers before anyone called them back.
We employ six people. We hold no clinical role in any study, we do not run trials, and we do not employ physicians. Our work ends when you contact a research site.
Ridgeline Clinical Research is a clinical trial information service. We tell people about clinical studies only. We do not sell, distribute, or recommend supplements, vitamins, devices, or any other product.
Reach a person
A real phone number, answered by someone who works here. If you would rather not call, write to us and we reply the same business day.
- Telephone
- (719) 701-8266
Monday to Friday, 9am to 6pm Mountain. Leave a number on voicemail and we call back the same business day. - [email protected]
- Who you will speak to
- Alana Whitfield, Director of Participant Recruitment, or one of two coordinators on her team. Nobody here is a clinician and nobody here can answer a medical question.
Director of Participant Recruitment