Everything You Need to Know Before Joining a Clinical Trial
A plain language guide to how clinical trials work, what participation looks like, and what you are entitled to know.
What is a Clinical Trial?
A clinical trial is a research study that tests whether a treatment, medication, device, or approach is safe and effective for people. Trials are conducted by research teams at hospitals, universities, clinics, and sometimes in patients' own homes.
Every clinical trial in the United States and Canada follows strict rules set by government regulators. Before a trial can begin, an independent ethics board must review and approve it. In the US this is called an Institutional Review Board. In Canada it is called a Research Ethics Board. Their job is to protect participants.
Participating in a clinical trial is always voluntary. You can never be pressured to join, and you can leave at any point without it affecting your regular medical care.
How the Process Works, Step by Step
Most people do not know what actually happens between finding a trial and participating in one. Here is what the path looks like from your side.
01
You find a trial that looks relevant
You search a public registry such as ClinicalTrials.gov or use our navigation support to find a study that matches your condition.
02
You review the eligibility criteria
Every trial has inclusion and exclusion criteria. These are the conditions that determine who can participate.
03
You contact the trial team
If you think you may qualify, you reach out to the study site listed on the trial page. This is usually a nurse coordinator.
04
You attend a screening visit
If the initial call goes well, you are invited for a screening visit to confirm whether you meet all criteria.
05
You review informed consent
If you qualify, the team walks you through the informed consent document. You have the right to take it home.
Types of Trials You Might Find
Not all clinical trials require you to travel or visit a clinic every week. Here are the main formats you will come across:
π₯ In-Person Trials
You visit a clinic, hospital, or research center for your study visits. These are the most common type. Visit frequency varies widely.
π» Remote Trials
Some or all of your participation happens from home. You may use a phone app, a wearable device, or video appointments.
π Observational Studies
These studies do not test a treatment. Researchers observe participants over time to understand a condition or track symptoms.
π Natural History Studies
Common in rare diseases. Researchers follow patients over time to understand how a condition progresses without experimental drug involved.
Compensation and What Trials Typically Cover
One of the most common questions patients have is what a trial costs and whether they are paid. The answer varies by study.
- The study treatment itself is almost always provided at no cost to participants.
- Many trials cover or reimburse travel expenses, including gas and parking.
- Some trials pay a stipend for your time and inconvenience.
- Trials do not typically cover your regular medical care.
- Always ask the study coordinator before you commit.
A note on compensation
Receiving compensation does not mean a trial is less rigorous or less safe. Compensation is standard practice in clinical research.
- What the study is testing and why
- What you will be asked to do
- What the known risks are
- What potential benefits there may be
- Placebo vs real treatment
- Whether study is blinded
- Right to leave any time
- Who to contact for questions
Informed Consent: What It Is and What It Means for You
Before you join any trial, you will receive an informed consent document. It covers your rights and study details.
Trial Phases, Briefly Explained
Here is what the phase numbers mean in plain terms.
Phase 1
Safety and dosage. Small group of 20 to 80 people.
Not sure where to start? We can help.
Our nonprofit team searches these registries on your behalf. Reach out and we will do the research with you.
Search Official Trial Registries
The most reliable place to search for clinical trials is a government registry. Updated directly by research teams.
Phase 2
Efficacy and safety. Typically several hundred people.
Signing is not a contract. You can withdraw at any time for any reason and it will not affect your access to standard medical care.
Your rights
You have the right to know exactly what you are participating in. You have the right to ask questions and leave at any stage.
Phase 3
Confirmation. Thousands of participants across multiple sites.
Phase 4
Long-term monitoring. After regulatory approval.
OFFICIAL SEARCH TOOLS
Verified Public Directories
We recommend starting your trial search through these government and international registries. These databases are managed by regulatory bodies and provide accurate, verified information directly from official health organizations.